• ObjectListView - ObjectListView is a C# wrapper around a .NET ListView. It makes the ListView much easier to use and teaches it some new tricks
• DockPanelSuite - The Visual Studio inspired docking library for .NET WinForms
• MaterialDesignInXamlToolkit - Toolkit for creating Material Design styled WPF apps
• Empty Keys UI - Multi-platform and multi-engine XAML based user interface library **[Free][Proprietary]**
• Bunifu UI Framework - Carefully crafted Winforms controls and components for creating stunning modern application UI. **[$]**
• Callisto - A control toolkit for Windows 8 XAML applications. Contains some UI controls to make it easier to create Windows UI style apps for the Windows Store in accordance with Windows UI guidelines.

GUI - Themed Control Toolkits

• UWP Community Toolkit - The UWP Community Toolkit is a collection of helper functions, custom controls, and app services. It simplifies and demonstrates common developer tasks building UWP apps for Windows 10.
• Bunifu UI Framework - Carefully crafted Winforms controls and components for creating stunning modern application UI. **[$]**
• MahApps.Metro - Toolkit for creating Metro-styled WPF apps
• HandyControl - Contains some simple and commonly used WPF controls
• Modern UI for WPF - MUI - Set of controls and styles to convert WPF applications into a great looking Modern UI apps.
• MaterialSkin - Theming .NET WinForms, C# or VB.Net, to Google's Material Design principles.
• AdonisUI - Lightweight UI toolkit for WPF applications offering classic but enhanced Windows visuals.
• MaterialDesignInXamlToolkit - Toolkit for creating Material Design styled WPF apps

GUI - Framework

• Qml.Net - A cross-platform Qml/.NET integration for Mono/.NET/.NET Core
• QtSharp - Mono/.NET Bindings for Qt
• Avalonia - A multi-platform .NET UI framework (formerly known as Perspex).
• Windows UI Library - The Windows UI Library (WinUI) provides official native Microsoft UI controls and features for Windows UWP apps.
• UNO Platform - The only platform for building native mobile, desktop and WebAssembly with C#, XAML from a single codebase. Open source and professionally supported. Website: [platform.uno](https://platform.uno/)
• Xamarin.Forms - Build native UIs for iOS, Android and Windows from a single, shared C# codebase.
• Eto.Forms - Cross-platform GUI framework for desktop and mobile applications in .NET and Mono
• Gtk# - Gtk# is a Mono/.NET binding to the cross platform Gtk+ GUI toolkit and the foundation of most GUI apps built with Mono
• SciterSharp - Create .NET cross-platform desktop apps using not just HTML, but all features of Sciter engine: CSS3, SVG, scripting, AJAX, <video>... Sciter is free for commercial use
• XWT - A cross-platform UI toolkit for creating desktop applications with .NET and Mono
• Lara - Lara Web Engine is a library for developing Web user interfaces in C# - (Blazor Server-Side Alternative)
• Neutronium - Build .NET desktop applications using HTML, CSS, javascript and MVVM bindings such as with WPF.
• photino.NET - Photino is a lightweight open-source framework for building native, cross-platform desktop applications with Web UI technology.

GUI - other

• ObjectListView - ObjectListView is a C# wrapper around a .NET ListView. It makes the ListView much easier to use and teaches it some new tricks
• WinApi - A simple, direct, ultra-thin CLR library for high-performance Win32 Native Interop with automation, windowing, DirectX, OpenGL and Skia helpers.
• AvalonEdit - The WPF-based text editor component used in SharpDevelop

• Log4Net - The Apache log4net library is a tool to help the programmer output log statements to a variety of output targets
• ELMAH - Official ELMAH site
• Loupe - Centralized .NET logging and monitoring. **[Proprietary]** **[Free Tier]**
• elmah.io - Cloud logging for .NET web applications using ELMAH. Find bugs before you go live. Powerful search, API, integration with Slack, GitHub, Visual Studio and more. **[[Free for OSS](https://elmah.io/sponsorship/opensource)]** **[$]**
• BugSnag - Logs errors. Includes useful diagnostic info like stack trace, session, release, etc. Has a free tier. **[Free for OSS][$]**

GUI - other

• NLog - NLog - Advanced .NET and Silverlight logging
• Logary - Logary is a high performance, multi-target logging, metric, tracing and health-check library for Mono and .NET. .NET's answer to DropWizard. Supports many targets, built for micro-services.
• Logazmic - Open source NLog viewer for Windows
• Elmah MVC - Elmah for MVC
• Rollbar.NET - Simplifies real-time remote error monitoring while using Rollbar.com. Open-source Rollbar Notifier SDK for any .NET-based technology stack. The SDK that can be used in any application built on the following .NET versions: .NET Core 2.0+, .NET Standard 2.0+, .NET Full Framework 4.5.1+, Mono, Xamarin, and, in general, any implementation of the .NET Standard 2.0+. It simplifies building data payloads based on exception data, tracing data, informational messages, and telemetry data and sends the payloads to the Rollbar API for remote monitoring and analysis of the hosting application's behavior. **[Connects to Proprietary Service]** **[Free Tier]**
• Sentry - .NET SDK for [Sentry](https://sentry.io/welcome/) Open-source error tracking that helps developers monitor and fix crashes in real time..
• Serilog - A no-nonsense logging library for the NoSQL era. Combines the best of traditional and structured diagnostic logging in an easy-to-use package.
• StackExchange.Exceptional - Error handler used for the Stack Exchange network
• ULogViewer - Cross-Platform (Windows/macOS/Linux) Universal Log Viewer which supports reading and parsing various type of logs. You can also define your own profile to parse and show logs.
• ZeroLog - ZeroLog is a zero-allocation .NET logging library. It provides basic logging capabilities to be used in latency-sensitive applications, where garbage collections are undesirable.
• AutoLoggerMessage - A source generator that automatically migrates all logging calls to high-performant `LoggerMessage` version.

• HtmlAgilityPack - an agile HTML parser that builds a read/write DOM and supports plain XPath or XSLT

GUI - other

• AngleSharp - Complete HTML5 DOM and CSS3 OM construction
• dotless - .NET port of the Ruby Less CSS lib http://www.dotlesscss.org
• ExCSS - CSS3 parser library for C#
• LibSass Host - .NET wrapper around the [libSass](https://sass-lang.com/libsass) library with the ability to support a virtual file system

• Flurl - Fluent, portable, testable REST/HTTP client library

GUI - other

• RestSharp - Simple REST and HTTP API client for .NET
• Refit - The automatic type-safe REST library for Xamarin and .NET
• WebApiClient
• Apizr
• Fluxzy.Core - A fully managed and fully streamed Man-On-The-Middle library to intercept, record and alter HTTP/1.1, H2, websocket traffic over plain or secure channels.
• NotoriousClient - typed, extensible HTTP client with fluent request builder, streaming & multipart. Built on .NET's HttpRequestMessage.

• Visual Studio Express - The free lightweight version of Visual Studio for .NET programming.
• Visual Studio Community - A full-featured IDE
• Visual Studio Code - Excellent open source editor from Microsoft, based on Electron.
• Ionide - An Atom Editor and Visual Studio Code package suite for cross platform F# development.
• Rider - A cross-platform C# IDE based on the IntelliJ platform and ReSharper
• Consulo - A cross-platform IDE with C# & Java support, fork of IntelliJ IDEA Community Edition

GUI - other

• RoslynPad - A simple C# editor based on Roslyn and AvalonEdit.
• vvvv - programming environment for .NET **[Free for OSS]**
• Waf DotNetPad - A simple and fast code editor that makes fun program with C# or Visual Basic.
• CSharp Analyzer by MongoDB

• ImageResizer - Add commands to image URLs to get altered versions in milliseconds. Resizing, editing etc of images in real-time.
• DynamicImage - High-performance open-source image manipulation library for ASP.NET.
• Emgu CV - Cross-platform .NET wrapper for the OpenCV library.
• SimpleITK - A simplified path to Insight. Open-source multi-dimensional image analysis in Python, R, Java, C#, Lua, Ruby, TCL and C++. Developed by the Insight Toolkit community for the biomedical sciences and beyond.
• Imgix-CSharp - Easily update image urls to be fast and responsive. **[$]**

GUI - other

• OpenCvSharp - Cross platform wrapper of OpenCV for .NET Framework.
• ImageWizard - Image processing webservice based on ASP.NET Core and ImageSharp / SkiaSharp / SvgNet / DocNET
• ImageSharp - Fully managed cross-platform library for processing of image files.
• MagicScaler - High-performance image processing pipeline for .NET, focused on making complex imaging tasks simple.
• MetadataExtractor - Extracts Exif, IPTC, XMP, ICC and other metadata from image files.
• Emgu CV - Cross-platform .NET wrapper for the OpenCV library.
• Magick.NET - .NET wrapper for the ImageMagick library.
• PixelViewer - Cross-platform (Windows/macOS/Linux) image viewer which supports reading raw Luminance/YUV/RGB/ARGB/Bayer pixels data from file and rendering it. 10/16-bit YUV and viewing image frame sequence are also supported (v1.99+).
• Colourful - Open source .NET library for working with color spaces.
• Unicolour - Colour conversion, interpolation, and comparison for .NET.

• Wix Toolset - The most powerful set of tools available to create your Windows installation experience
• Wax - An interactive editor for WiX projects.

GUI - other

• Wix Toolset - The most powerful set of tools available to create your Windows installation experience
• Squirrel - Squirrel is both a set of tools and a library, to completely manage both installation and updating your desktop Windows application.
• Chocolatey - like `yum` or `apt-get`, but for Windows.
• Onova - An unopinionated auto-update framework for desktop applications.

• Microsoft.Extensions.DependencyInjection - The default IoC container for NET applications.
• Ninject - The ninja of .NET dependency injectors

GUI - other

• Autofac - An addictive .NET IoC container
• DryIoc - Simple, fast all fully featured IoC container.
• Lamar - A fast IoC container heavily optimized for usage within ASP.NET Core and other .NET server side applications.
• LightInject - A ultra lightweight IoC container
• Simple Injector - Simple Injector is an easy-to-use Dependency Injection (DI) library for .NET 4+ that supports Silverlight 4+, Windows Phone 8, Windows 8 including Universal apps and Mono.
• Scrutor - Assembly scanning extensions for Microsoft.Extensions.DependencyInjection.
• VS MEF - Managed Extensibility Framework (MEF) implementation used by Visual Studio.
• Stashbox - A lightweight, portable dependency injection framework for .NET based solutions.

• Accord.NET - Machine learning framework combined with audio and image processing libraries (computer vision, computer audition, signal processing and statistics).
• AForge.NET - Framework for developers and researchers in the fields of Computer Vision and Artificial Intelligence (image processing, neural networks, genetic algorithms, machine learning, robotics).
• FsLab - A collection of data science and machine learning libraries for F# and .NET

GUI - other

• Infer.NET - A framework for running Bayesian inference in graphical models. It can also be used for probabilistic programming.
• Catalyst - platform Natural Language Processing (NLP) library inspired by spaCy, with pre-trained models, out-of-the box support for training word and document embeddings, and flexible entity recognition models. Part of the [SciSharp Stack](https://scisharp.github.io/SciSharp/)
• GeneticSharp - Multi-platform genetic algorithm library for .NET Core and .NET Framework. The library has several implementations of GA operators, like: selection, crossover, mutation, reinsertion and termination.
• ML.NET - Cross-platform open-source machine learning framework which makes machine learning accessible to .NET developers.
• F# Data - F# type providers for accessing XML, JSON, CSV and HTML files (based on sample documents) and for accessing WorldBank data
• SciSharp STACK - A rich machine learning ecosystem for .NET created by porting the most popular Python libraries to C#.
• OpenGA.Net - Genetic algorithm .NET library for solving optimization problems, featuring extensible operators and adaptive strategy selection.

• MarkdownSharp - Open source C# implementation of Markdown processor, as featured on Stack Overflow.

GUI - other

• markdig - A fast, powerful, CommonMark compliant, extensible Markdown processor for .NET.

• MathNet - Math.NET is an open source initiative to build and maintain toolkits covering fundamental mathematics, targeting advanced but also every day needs of .NET developers
• ALGLIB - ALGLIB is a cross-platform numerical analysis and data processing library. It supports several programming languages (C++, C#, Delphi) and several operating systems (Windows and POSIX, including Linux) **[Proprietary]** and **[Free Edition]**

GUI - other

• MKL.NET - A simple cross platform .NET API for Intel MKL.
• WPF-Math - a .NET library for rendering mathematical formulae using the LaTeX typesetting style, for the WPF framework
• Jodo.Numerics - Provides extra number types (such as fixed-point and non-overflowing numbers) with full support for operators, math, string-parsing etc. Extensively tested, and cross-platform compatible.
• MathFlow - Comprehensive math expression library with symbolic computation support including differentiation, simplification, and equation solving.
• Microsoft Automatic Graph Layout - A set of tools for graph layout and viewing.
• GeometRi - Simple and lightweight computational geometry library for .Net
• Rationals - Implementation of rational number arithmetic for .NET with arbitrary precision.
• AngouriMath - An open-source symbolic/computer algebra library, made primarily for C# and F#. It covers a range of features and might be considered as an alternative to SymPy in .NET.
• Jodo.Numerics - Provides extra number types (such as fixed-point and non-overflowing numbers) with full support for operators, math, string-parsing etc. Extensively tested, and cross-platform compatible.

• Microsoft Ajax Minifier - Contains JS and CSS minifiers which have a highest performance, because its have been specifically designed for .NET. Optionally produce Source Maps for JS code.

GUI - other

• Web Markup Minifier - .NET library that contains a set of markup minifiers. The objective of this project is to improve the performance of web applications by reducing the size of HTML, XHTML and XML code.
• CompressedStaticFiles - Send compressed static files to the browser without having to compress on demand, also has support for sending more advanced image formats when the browser indicates that i has support for it.

• CSharp Pad - A web-based C# REPL with awesome code completion.
• CSScript - CS-Script is a CLR based scripting system which uses C# as a programming language. CS-Script currently targets Microsoft implementation of CLR (.NET 2.0/3.0/3.5/4.0/4.5) with full support on Mono. Comes with many additional features, such as script hosting.
• LINQPad - a C#/VB/F# scratchpad that instantly executes any expression, statement block or program with rich output formatting and a wealth of features. Also lets you interactively query databases in LINQ. [$]
• MSBuild ILMerge task - MSBuild ILMerge task is a NuGet package allows you to use the famous ILMerge utility in automated builds and/or Visual Studio projects.

GUI - other

• LINQPad - a C#/VB/F# scratchpad that instantly executes any expression, statement block or program with rich output formatting and a wealth of features. Also lets you interactively query databases in LINQ. [$]
• RazorKit - RazorKit is a collection of lightweight, fluent-style Razor HTML helpers that make it easy for developers to integrate popular JavaScript libraries into their ASP.NET applications.
• AzureCrawler - Take HTML Snapshots for your Angular, Ember, Durandal or any JavaScript applications
• CsvHelper - Library to help reading and writing CSV files https://github.com/JoshClose/CsvHelper
• RecordParser - Library to help reading and writing CSV and Flat files with zero heap allocation.
• Sep - World's Fastest .NET CSV Parser. Modern, minimal, fast, zero allocation, reading and writing of separated values (`csv`, `tsv` etc.). Cross-platform, trimmable and AOT/NativeAOT compatible.
• ConsoleTableExt - Fluent library to create table for .Net console application.
• FluentValidation - A small validation library for .NET that uses a fluent interface and lambda expressions for building validation rules.
• Validot - Validot is a performance-first, compact library for advanced model validation. Using a simple declarative fluent interface, it efficiently handles classes, structs, nested members, collections, nullables, plus any relation or combination of them. It also supports translations, custom logic extensions with tests, and DI containers.
• Humanizer - Humanizer meets all your .NET needs for manipulating and displaying strings, enums, dates, times, timespans, numbers and quantities
• Polly - Express transient-exception-handling and resilience policies such as Retry, Wait-and-Retry, Circuit Breaker, and Bulkhead Isolation in a fluent manner. Fully thread-safe and full async support. (4.0 / 4.5 / .NET Core / .NET Standard / Xamarin).
• Aeron.NET - Efficient reliable UDP unicast, UDP multicast, and IPC message transport - .NET port of Aeron
• TypeShape - TypeShape is a small, extensible F# library for practical generic programming
• ByteSize - ByteSize is a utility class that makes byte size representation in code easier by removing ambiguity of the value being represented. ByteSize is to bytes what System.TimeSpan is to time.
• Jot - a library for persisting and restoring application state (a better alternative to .settings files).
• Enums.NET - Enums.NET is a high-performance type-safe .NET enum utility library
• YoutubeExplode - Ultimate library for extracting metadata and downloading Youtube videos and playlists.
• DeviceId - Generate a 'device ID' that can be used to uniquely identify a computer.
• DeviceDetector.NET - The Universal Device Detection library will parse any User Agent and detect the browser, operating system, device used (desktop, tablet, mobile, tv, cars, console, etc.), brand and model.
• NaturalSort.Extension - Extension method for StringComparer that adds support for natural sorting (e.g. "abc1", "abc2", "abc10" instead of "abc1", "abc10", "abc2").
• Coravel - zero config .NET Core library that makes Task Scheduling, Caching, Queuing, Mailing, Event Broadcasting (and more) a breeze!
• Build Versioning - Simple build versioning for .NET, powered by Git tags
• SystemTextJson.JsonDiffPatch - High-performance, low-allocating JSON object diff and patch extension for System.Text.Json. Support generating patch document in RFC 6902 JSON Patch format.
• dotnet-exec - A command-line tool for executing C# program without a project file, and you can have your custom entry point other than Main method.
• ComputeSharp - A a .NET library to run C# code in parallel on the GPU through DX12, D2D1, and dynamically generated HLSL compute and pixel shaders.
• ILGPU - A JIT (just-in-time) compiler for high-performance GPU programs written in .Net-based languages.
• LINQPad.QueryPlanVisualizer - View SQL Server and Postgres query plans directly inside LINQPad.

• Community Toolkit - Collection of control & helper libraries and samples for various .NET technologies. Contains modern MVVM library, supported by Microsoft. Includes [Windows Community Toolkit](https://github.com/CommunityToolkit/WindowsCommunityToolkit), [MAUI Community Toolkit](https://github.com/CommunityToolkit/Maui), and [Dotnet Community Toolkit](https://github.com/CommunityToolkit/dotnet).
• Catel - Catel is an application development platform with the focus on MVVM (WPF, Silverlight, Windows Phone and WinRT) and MVC (ASP.NET MVC). The core of Catel contains an IoC container, models, validation, memento, message mediator, argument checking, etc.
• UpdateControls - Update Controls does not require that you implement `INotifyPropertyChanged` or declare a `DependencyProperty`. It connects controls directly to CLR properties. This makes it perfect for the Model/View/ViewModel pattern.
• Okra App Framework - An app centric MVVM framework for Windows 8.1 built with dependency injection in mind, including a full set of Visual Studio MVVM templates.

GUI - other

• ReactiveUI - An MVVM framework for .NET that integrates the Reactive Extensions (Rx) framework, enabling developers to build elegant, testable applications using WPF, Windows Store Apps, WP8 or Xamarin.
• Stylet - Minimal MVVM framework inspired by Caliburn Micro, with good documentation, high test coverage, and its own IoC container
• Caliburn.Micro - A small, yet powerful framework, designed for building applications across all XAML platforms. Its strong support for MV* patterns will enable you to build your solution quickly, without the need to sacrifice code quality or testability.
• Catel - Catel is an application development platform with the focus on MVVM (WPF, Silverlight, Windows Phone and WinRT) and MVC (ASP.NET MVC). The core of Catel contains an IoC container, models, validation, memento, message mediator, argument checking, etc.
• Prism - A cross-platform desktop and mobile MVVM development framework.
• Win Application Framework (WAF) - A lightweight Framework that helps you to create well structured WPF and UWP Applications. It supports you in applying a Layered Architecture and the Model-View-ViewModel pattern.
• MVVMCross - Cross-platform mvvm mobile development framework for WPF, Silverlight for WP7 and WP8, Mono for Android, MonoTouch for iOS, Windows Universal projects (WPA8.1 and Windows 8.1 Store apps). Makes extensive use of Portable Class Libraries (PCL) to provide maintainable cross platform C# native applications.
• Toms Toolbox - Visual Composition framework to easily build modularized MVVM applications based on the [Managed Extensibility Framework (MEF)](https://docs.microsoft.com/en-us/dotnet/framework/mef/).
• MVVM Dialogs - Framework simplifying the concept of opening dialogs from a view model when using MVVM in WPF or UWP.

• GemBox.Bundle - A package of .NET components that enable fast, simple and efficient processing of office files (Excel, Word, PowerPoint, PDF and emails). **[$]****[Free Lite versions]**
• Outlook Redemption - Library to work with the Outlook Object Model and (Extended) MAPI. Supports Outlook 98 - 2019. Work with objects/mails/accounts/folders in Exchange and Outlook. **[$]**
• Syncfusion .NET Word Framework - A high-performance .NET Word framework without Microsoft Office or interop dependencies. Create, read, and edit Word documents seamlessly. Utilize advanced editor components for easy viewing, editing, and printing. Effortlessly convert Word documents to PDF, HTML, RTF, ODT, and EPUB formats with powerful conversion APIs. **[$]** **[[Free for Individuals and Small Businesses](https://www.syncfusion.com/products/communitylicense)]**
• Syncfusion .NET Excel Framework - A high-performance .NET Excel framework without Microsoft Office or interop dependencies. Create, read, and edit Excel documents seamlessly. Utilize Spreadsheet controls for creating, editing, and viewing easily. Effortlessly convert Excel files to PDF, images, and more with powerful conversion APIs. **[$]** **[[Free for Individuals and Small Businesses](https://www.syncfusion.com/products/communitylicense)]**
• Syncfusion .NET PowerPoint Framework - A high-performance .NET PowerPoint framework without Microsoft Office or interop dependencies. Create, read, and edit PowerPoint files seamlessly. Effortlessly convert PowerPoint files to PDFs and images with powerful conversion APIs. **[$]** **[[Free for Individuals and Small Businesses](https://www.syncfusion.com/products/communitylicense)]**

GUI - other

• MiniExcel - A micro Excel helper avoids OOM and high performance to create/mapping/template-fill-data.
• ExcelDna - ExcelDna makes it easier to create and deploy Excel Add-Ins using C#, F# or VB .NET
• ClosedXML - ClosedXML makes it easier for developers to create Excel 2007/2010 files
• OfficeIMO - OfficeIMO makes it easier for developers to create/modify Word (docx) files without having Microsoft Word or Office installed
• NPOI - This project is the .NET version of POI Java project at https://poi.apache.org/.
• EPPlus - EPPlus is a .NET library that reads and writes Excel 2007/2010 files using the Open Office XML format (xlsx).
• DocX - DocX is a .NET library that allows developers to manipulate Word 2007/2010/2013 files, it does not require Microsoft Word or Office to be installed.
• ExcelDataReader - Lightweight and fast library written in C# for reading Microsoft Excel files (2.0-2007).
• NetOffice - .NET wrapper assemblies for Microsoft Office applications.
• ShapeCrawler - A fluent API for the processing of PowerPoint presentations without Microsoft Office installed.
• MatchFlow - Web-based invoice reconciliation platform with OCR extraction and automated purchase order matching using ASP.NET Core and Azure Form Recognizer.
• Toxy - .NET text extraction framework supports a few file formats

• FreeSql - a convenient ORM in dotnet, supports MySql, SqlServer, PostgreSQL, Oracle, Sqlite, Firebird, 达梦, 人大金仓, 神舟通用, 翰高 and Access.
• NHibernate - NHibernate Object Relational Mapper
• LLBLGen Pro - Entity Modeling solution for Entity Framework, NHibernate, Linq to SQL and its own ORM framework: LLBLGen Pro Runtime Framework. **[$][Free Lite version]**
• Friflo.Json.Fliox - High performane ORM for Sqlite, MySql, SqlServer, PostgreSQL & NoSQL. Provides server with REST, GraphQL & WebSocket / PubSub API.

GUI - other

• Dapper.FastCRUD - The fastest micro-ORM extension for Dapper
• Entity Framework Core - Object-relational mapper that enables .NET developers to work with relational data using domain-specific objects
• EntityFramework.Exceptions - Use typed Exceptions for Entity Framework Core when your SQL query violates database constraints in SqlServer, MySql, PostgreSQL or SQLite
• EntityFrameworkCore.SqlServer.SimpleBulks - Simple library that can help to sync a large number of records in-memory into the database. Lambda Expression is supported.
• EFCore.BulkExtensions - Entity Framework Core Bulk Extensions for super fast (BulkCopy) CRUD ops + SaveChanges on multiple DBs: SQL, PG, My, Lite.
• Dapper - A simple object mapper for .NET by [StackExchange](https://stackexchange.github.io/)
• DapperQueryBuilder - Dapper Query Builder using String Interpolation and Fluent API
• SqlSugar - Another ORM library supports many RDBMS including MySql, SqlServer, Sqlite, Oracle, Postgresql - **NOTE**: This is not affiliated with Microsoft or .NET
• Fluent NHibernate - Fluent, XML-less, compile safe, automated, convention-based mappings for NHibernate.
• FluentMigrator - Fluent Migrations framework for .net
• ServiceStack.OrmLite - Light, simple and fast convention-based POCO ORM **[[Free for OSS](https://github.com/ServiceStack/ServiceStack/blob/master/license.txt)]** **[$]**
• LINQ to DB - The fastest LINQ database access library offering a simple, light, fast, and type-safe layer between your POCO objects and your database.
• PetaPoco - A tiny ORM-ish thing for your POCOs
• NPoco - Simple microORM that maps the results of a query onto a POCO object. Based on Schotime's branch of PetaPoco
• Insight.Database - Insight.Database is a fast, lightweight, micro-ORM for .NET
• RepoDb - A hybrid ORM library for .NET.
• MongoFramework - An "Entity Framework"-like interface for MongoDB

• NuGet - The .NET package manager
• Cloudsmith - A fully managed package management SaaS, with support for NuGet, Npm, Docker and much more. **[Free for Public/OSS]** **[$]**

GUI - other

• Sleet - A NuGet v3 static feed generator with support for AWS S3 and Azure Storage
• Cloudsmith - A fully managed package management SaaS, with support for NuGet, Npm, Docker and much more. **[Free for Public/OSS]** **[$]**
• Paket - A package dependency manager for .NET with support for NuGet packages and GitHub repositories. https://fsprojects.github.io/Paket/

• Cloudmersive PDF - Cloudmersive PDF is a native .NET Framework and .NET Core NuGet library and API service that can create, modify, encrypt or convert PDF documents at high scale and fidelity; and is free to use with no expiration **[Free]**
• Docotic.Pdf - PDF library to create, read, edit, draw, and print PDF documents in .NET and .NET Core applications. 100% managed, without unsafe blocks. **[$]** **[[Free for OSS](https://bitmiracle.com/pdf-library/free-pdf-library.aspx)]**
• Pdfium.Net SDK - Advanced C# PDF library for render, create, edit, merge, split, print, and view PDFs. Open source PDF Viewer is available on [GitHub](https://github.com/patagames). A [NuGet package](https://www.nuget.org/packages/Pdfium.Net.SDK/) is also available for easy inclusion into your projects.**[$]**
• QuestPDF - QuestPDF is an open-source, modern and battle-tested library that can help you with generating PDF documents by offering friendly, discoverable and predictable C# fluent API.
• IronPDF - High-performance C# PDF library with compatibility for various .NET versions, HTML to PDF conversion, content page conversion, file format support (e.g., DOCX, RTF, MD), responsive layouts, and robust PDF capabilities features ranging from compability, generating PDFs, formatting PDFs, and editing PDFs. **[$]** **[Free trial available]**
• Syncfusion .NET PDF Framework - A high-performance .NET PDF framework with no Adobe dependencies. Create, read, and edit PDF files seamlessly. Utilize PDF viewer controls for easy viewing, reviewing, and printing. Effortlessly convert HTML, Word, Excel, PowerPoint files, and images to PDF with powerful conversion APIs. **[$]** **[[Free for Individuals and Small Businesses](https://www.syncfusion.com/products/communitylicense)]**

GUI - other

• QPdfSharp - A C# wrapper written around QPdf to allow for easy PDF manipulation that is tested for both linux and windows. QPdf is one of the only libraries capable of PDF linearization, and this wrapper ensures you keep up to date with the underlying improvements.
• IText - iText is a PDF library that allows you to CREATE, ADAPT, INSPECT and MAINTAIN documents in the Portable Document Format (PDF)**[$]** **[Free for OSS]**
• PdfPig - Read and create and extract text and other content from PDFs in C# (port of PdfBox)
• Kevsoft.PDFtk - A wrapper to drive the awesome pdftk binary, which can fill PDF forms, get field information, concatenate multiple documents or pages, split documents, add or replace stamps, and can attach files to or download files from pages.

• SharpSnmpLib - An open source SNMP implementation for .NET/Mono/Xamarin. Versioin 1, 2c, and 3 are supported.

GUI - other

• SSH.NET - A Secure Shell (SSH) library for .NET, optimized for parallelism. Provides SSH commands, SFTP/SCP uploads and downloads, and SOCKS4/SOCKS5/HTTP proxies.
• FluentFTP - An FTP and FTPS library for .NET, optimized for speed. Provides extensive FTP commands, file uploads/downloads and FTP proxies.
• DnsClient.NET - A simple yet very powerful and high performant open source library for the .NET Framework to do DNS lookups.
• Tecan SiLA2 SDK - A library and code generator to develop SiLA2 clients and servers.

• SqlKata - Elegant SQL query builder, that supports complex queries, joins, sub queries, nested where conditions, vendor engine targets and more

GUI - other

• InterpolatedSql - SQL Builder using String Interpolation and Fluent API

• Silverback - A simple but feature-rich message bus for .NET core (supports Kafka, RabbitMQ and MQTT).
• Cap.Outbox - Implementation of the Outbox pattern and OnceExecutor service that guarantees idempotence: the operation will be performed once

GUI - other

• CAP - An EventBus with local persistent message functionality for RabbitMQ or Kafka. - **NOTE**: This is not affiliated with Microsoft or .NET
• NServiceBus - The most popular service bus for .NET
• Hangfire - Incredibly easy way to perform fire-and-forget, delayed and recurring tasks inside ASP.NET applications
• RabbitMQ.NET - Implementation of an AMQP client library for C#, and a binding exposing AMQP services via WCF
• NetMQ - NetMQ is 100% native C# port of ZeroMQ
• MassTransit - MassTransit is lean service bus implementation for building loosely coupled applications using the .NET Framework.
• Rebus - Rebus is a lean service bus implementation for .NET, similar in nature to NServiceBus and MassTransit, only leaner
• EasyNetQ - An easy to use .NET API for RabbitMQ
• Warewolf ESB - An easy to use service bus and microservices platform. Easily build applications and services in a visual IDE.
• Confluent's .NET Client - Confluent's .NET Client for Apache Kafka.
• Streamiz - a .NET Stream Processing Library for Apache Kafka.
• Brighter - Command Dispatcher, Processor, and Distributed Task Queue https://www.goparamore.io/
• SlimMessageBus - Lightweight message bus with transports for popular messaging systems (Kafka, Redis, Azure Service Bus, and others) and in-memory communication.
• AsyncMonolith - Facilitates simple asynchronous messaging in dotnet apps.

• Hangfire - An easy way to perform fire-and-forget, delayed and recurring tasks inside .NET apps

GUI - other

• NCrontab - Class library for parsing & formatting [crontab](http://crontab.org/) expressions as well as calculating occurrences of time based on a crontab schedule
• NCrontab.Scheduler - Simple task scheduler library for scheduling NCrontab-based tasks
• QuartzNet - Quartz Enterprise Scheduler .NET
• DurableTask - This framework allows users to write long running persistent workflows in C# using the async/await capabilities.
• Workflow Core - Lightweight embeddable workflow engine
• Occurify - A powerful and intuitive .NET library for defining, filtering, transforming, and scheduling instant and period timelines.
• TickerQ - Lightweight, high-performance, reflection-free job scheduler for .NET with EF Core, cron/time-based execution, custom locking, and retry support.
• NCronJob - A Job Scheduler sitting on top of IHostedService in dotnet.
• NaturalCron - readable scheduling library for .NET using natural-language expressions.

• Cloudmersive APIs - An API client library for .NET **[Proprietary][Free]**

GUI - other

• Countly SDK for Windows - Windows SDK for Countly analytics and marketing platform for product and marketing managers
• AWS SDK - The AWS SDK for .NET enables .NET developers to easily work with Amazon Web Services
• Azure PowerShell - A set of PowerShell cmdlets for developers and administrators to develop, deploy and manage Microsoft Azure applications
• Octokit.NET - A GitHub API client library for .NET
• Dropbox.NET - Official .NET SDK for the Dropbox API
• Getty Images API SDK - SDK for the Getty Images and iStock APIs

• Lucene.net - Lucene.Net is a port of the Lucene search engine library, written in C# and targeted at .NET runtime users

GUI - other

• Elasticsearch .NET - Elasticsearch.Net & NEST
• SolrNet - Solr client for .NET
• Lunr-Core - Lunr-core is a small, full text search library for use in small applications. It's a .NET port of LUNR.js.
• hOOt - Smallest full text search engine (lucene replacement). built from scratch using inverted Roaring bitmap index, highly compact storage, operating in database and document modes
• ZoneTree.FullTextSearch - efficient full-text search library. extends ZoneTree. It is fast, embedded search engine suitable for applications that require high performance and do not rely on external databases.

• Wyam - A simple to use, highly modular, and extremely configurable static content generator

GUI - other

• Sandra.Snow - Jekyll-inspired static site generation for .NET
• AspNetStatic - Transform ASP.NET Core web app into a static site generator.

• BDTest - A behaviour driven testing and reporting framework!
• NCrunch - An automated continuous & concurrent testing tool for Visual Studio. **[$]**
• NFluent - NFluent is an assertion library which aims to fluent your .NET TDD experience.
• NSubstitute - A friendly substitute for .NET mocking frameworks
• ReportPortal - AI-powered Test Automation Dashboard. Acquire, aggregate and analyze test reports to ascertain release health.

GUI - other

• ArchUnitNET - Simple library for checking the architecture of C# code with a fluent API.
• AutoFixture - AutoFixture is an open source framework for .NET designed to minimize the 'Arrange' phase of your unit tests
• Bogus - A simple and sane fake data generator for C#. Based on and ported from the famed faker.js.
• ExpressionToCode - Use plain C# syntax in assertions that include both the expression expression and subexpression values in the failure message.
• FakeItEasy - The easy mocking library for .NET https://fakeiteasy.github.io
• Fluent Assertions - A set of .NET extension methods that allow you to more naturally specify the expected outcome of a TDD or BDD-style test **[Source Available]** **[Free for OSS]**
• FsCheck - Random Testing for .NET.
• Machine.Specifications - Machine.Specifications (MSpec) is a context/specification framework that removes language noise and simplifies tests.
• Moq - The most popular and friendly mocking framework for .NET
• NBomber - Very simple load testing framework for Pull and Push scenarios. It's 100% written in F# and targeting .NET Core and full .NET Framework.
• NFluent - NFluent is an assertion library which aims to fluent your .NET TDD experience.
• NUnit - A unit-testing framework for all .NET languages
• Testcontainers - A library to support tests with throwaway instances of Docker containers for all compatible .NET Standard versions.
• SecTester - SecTester is a new tool that integrates [Bright](https://brightsec.com/) enterprise-grade scan engine directly into your integration or e2e tests. **[Proprietary]** **[Free]**
• Shouldly - Shouldly is an assertion framework which focuses on giving great error messages when the assertion fails while being simple and terse.
• Snapshooter - A snapshot testing tool for .NET Core and .NET Framework
• Stryker.NET - Mutation testing for .NET Core projects
• xUnit.net - A free, open source, community-focused unit testing tool for the .NET Framework.
• Canopy - Canopy is a free, open source F# web automation and testing framework
• Expecto - A smooth testing framework for F# with tests as values. Unit testing, property based testing, performance testing and stress testing.
• Compare-Net-Objects - Perform a deep compare of any two .NET objects using reflection. Shows the differences between the two objects.
• Verify - Verification tool to enable simple approval of complex models and documents.
• CsCheck - Random testing library for C#. Including concurrency, causal profiling, regression and performance testing.
• NotoriousTest - A lightweight .NET framework that makes integration tests fully isolated by orchestrating reusable infrastructures and environments, auto-resetting between tests. TestContainers and SQL Server built-in support. Based on XUnit.

• Fiddler - The free web debugging proxy for any browser, system or platform
• CatLight - Build status notifications for TFS/Jenkins/Travis/Appveyor. Cross-platform desktop app based on .NET Core and Electron. **[Free][Proprietary]**
• AnyStatus - A desktop notifications app for monitoring CI/CD pipelines, servers, network, health and metrics. AnyStatus supports Azure DevOps, Jenkins, TeamCity, AppVeyor and more.
• JSON Formatter and Validator - A blazing fast JSON formatter and validator that won't share JSON with a server.

GUI - other

• YARP - YARP is a reverse proxy toolkit for building fast proxy servers in .NET using the infrastructure from ASP.NET and .NET.
• Downloader - Fast and reliable multipart downloader with asynchronous progress events for .NET applications.
• Open Live Writer - Blog writer which integrated with WordPress, Blogger, et. al. Open Live Writer makes it easy to write, preview, and post to your blog.
• ShareX - ShareX is a free and open source program that lets you capture or record any area of your screen and share it with a single press of a key. It also allows uploading images, text or other types of files to over 80 supported destinations you can choose from.
• Opserver - Stack Exchange's Monitoring System
• Papercut - Papercut is an open source (.NET based) test email viewer that runs locally with a built-in SMTP server designed to receive and notify of test email messages.
• Fake JSON Server - Fake REST API for prototyping or as a CRUD Back End. No need to define types, uses dynamic typing. Data is stored to a single JSON file. Has authentication, WebSocket notifications, async long running operations, random generation for errors/delays and experimental GraphQL support.
• NETworkManager - A powerful tool for managing networks and troubleshoot network problems!
• CSharpier - An opinionated code formatter for c# that is based on the [Prettier](https://github.com/prettier/prettier) printing process.
• UnitsNet - Makes life working with units of measurement just a little bit better.
• Another Redis Desktop Manager - A faster, better and more stable redis desktop manager [GUI client], compatible with Linux, Windows, Mac. What's more, it won't crash when loading massive keys.
• OctaneEngine - A high performance multipart downloader with many features such as pause/resume support, asynchronous progress, and throttling.
• FastCloner - Fast deep cloning library for .NET 8+. Zero-config, works out of the box.
• STranslate - STranslate is a ready-to-go translation ocr tool developed with WPF.
• BouncyHSM - A software simulator of HSM and smartcard simulator with HTML UI, REST API and PKCS#11 interface.

• Managed Windows API - Introspect and automate third-party Windows / VC++ applications without needing its source code.

GUI - other

• Atata - Automated web testing full featured framework based on Selenium WebDriver.
• FlaUI - FlaUI is a .NET library which helps with automated UI testing of Windows applications (Win32, WinForms, WPF, Store Apps, ...).
• PuppeteerSharp - Puppeteer Sharp is a .NET port of the official Node.JS Puppeteer API.
• PuppeteerSharp.Contrib - Contributions to Puppeteer Sharp that provides a convenient way to write readable and robust browser tests.

• Nuget Package Manager - NuGet is the package manager for the Microsoft development platform including .NET
• Resharper - Developer Productivity Tool for Visual Studio **[$]**
• Productivity Power Tools - A set of extensions to Visual Studio Professional (and above) which improves developer productivity.
• Tabs Studio - Visual Studio tab manager with multiple tab rows, tab coloring and tab grouping. **[$]**
• VSColorOutput - Color highlighting for Build, Find and Debug output windows. Custom match patterns and colors can be added.
• CodeLineage - Easy access to a cumulative diff view between file revisions (supports svn, git, mercurial, perforce).
• OzCode - OzCode is a Visual Studio Extension which cuts down on debugging time and increases productivity by detecting and isolating bugs, making them easy to fix. **[$]**
• ViEmu - very powerful Vi/vim emulator for Visual Studio supporting all basic and many advanced features of vi/vim. **[$]**
• EFCore.Visualizer - View Entity Framework Core query plan directly in Visual Studio.
• SideWaffle - A collection of Item Templates for Visual Studio 2012/2013/2015 that makes any web developer's life much easier

GUI - other

• VsVIM - VIM in Visual Studio
• Roslynator - A collection of 500+ analyzers, refactorings and fixes for C#, powered by Roslyn
• SonarSource.sonarlint-visualstudio - SonarLint is a free, open source Visual Studio 2017, 2019 and 2022 extension that provides on-the-fly feedback to developers on new bugs and quality issues in C#, VB.NET, C/C++, TypeScript and JavaScript.

• ASP.NET MVC - ASP.NET is a free web framework for building great web sites and applications
• Coalesce - Coalesce is a framework for rapid-development of ASP.NET Core web applications.
• Suave.IO - Framework/library/web server that makes you cry tears of joy after finishing your project ahead-of-time when you look at the beautiful code you've written in F#.

GUI - other

• ASP.NET [Core - ASP.NET is a free web framework for building great web sites and applications
• Coalesce - Coalesce is a framework for rapid-development of ASP.NET Core web applications.
• CodeBehind Framework - Modern and powerful back-end framework under ASP.NET Core.
• DotVVM - MVVM framework for people who don't like to write JavaScript, with OWIN and ASP.NET Core support and a free extension for Visual Studio 2015 and 2017.
• Giraffe - Functional (F#) ASP.NET Core micro framework for building rich web applications

• WebSocket4NET - WebSocket client for .NET 2.0+, Xamarin, Mono, Silverlight, Windows Phone, & WinRT
• Crossertech - Provides a great set of tools for you to build real-time applications on the Microsoft.NET plattform and much more. **[$]**

GUI - other

• SignalR - Library for ASP.NET developers that makes it incredibly simple to add real-time web functionality to your applications
• SuperSocket - SuperSocket is a light weight extensible socket application framework
• Websocket-Sharp - A C# implementation of the WebSocket protocol client and server
• Websocket.Client - A multiplatform wrapper over native C# class ClientWebSocket with built-in reconnection and error handling.

• Awesome .NET Core - A collection of awesome .NET core libraries, tools, frameworks and software
• awesome-ddd - A curated list of Domain-Driven Design (DDD), Command Query Responsibility Segregation (CQRS), Event Sourcing, and Event Storming resources
• Awesome Unity - A categorized community-driven collection of high-quality awesome Unity assets, projects, and resources.
• Awesome Xamarin - A collection of interesting libraries/tools for Xamarin mobile projects.
• Awesome Roslyn - A curated list of awesome Roslyn books, tutorials, open source projects, analyzers, code fixes, and refactorings.
• .NET Open Source Developer Projects - This community maintained list showcases .NET open source projects that are useful for any aspect of the development process.
• Discover .NET - Awesome .NET open source and community resources.
• NuGet Trends - Check out NuGet packages adoption and what's trending on NuGet.
• Weekly C# Digest - Weekly email newsletter with manually curated top 5 links from the .NET community.
• ASP.NET Core Developer Roadmap - A complete guide to become a ASP.NET Developer.

GUI - other

• CodegenCS - Code Generation Toolkit where templates are written using plain C#. Command-line tool, MSBuild task, Visual Studio Extension, and Roslyn Source Generator.
• M31.FluentAPI - Effortlessly generate fluent APIs for your C# classes.
• Supernova.Enum.Generators - A C# source generator to create an enumeration class from an enum type. With this package, you can work on enums very, very fast without using reflection.
• Vogan - A value object generator with analizers.
• Dunet - A simple source generator for discriminated unions in C#.
• SyncMethodGenerator
• List of Automated Testing Tools and Frameworks for .NET - List of Automated Testing (TDD/BDD/ATDD/SBE) Tools and Frameworks for .NET
• .NET-libraries-that-make-your-life-easier - Open Source .NET libraries that make your life easier
• awesome-LINQ - A curated collection of awesome LINQ libraries, tools, and more.
• awesome-analyzers - A curated list of .NET Compiler Platform ("Roslyn") diagnostic analyzers and code fixes.
• ASP.NET Core Library and Framework Support - A list of what .NET libraries and frameworks are currently supported by ASP.NET Core and .NET Core).
• Awesome .NET Performance - A curated list of awesome .NET Performance books, courses, trainings, conference talks, blogs and most inspiring open source contributors.
• .NET Open Source Developer Projects - This community maintained list showcases .NET open source projects that are useful for any aspect of the development process.
• dotnet-console-games - Game examples implemented in .NET console applications.
• extra-awesome-dotnet - Sorted lists of awesome .NET repositories, with counts of stars, issues, and forks!
• Discover .NET - Awesome .NET open source and community resources.
• Awesome Microservices .NET Core - A collection of awesome training series, articles, videos, books, courses, sample projects, and tools for Microservices in .NET Core.

GUI - other

• SimpleW - Web server Library in .NET Core. Powerfully Simple, Blazingly Fast and Build-in components (API REST, JWT, Websockets, self-serialization, Opentelemetry).
• SimpleW - Web server Library in .NET Core. Powerfully Simple, Blazingly Fast and Build-in components (API REST, JWT, Websockets, self-serialization, Opentelemetry).
• EmbedIO - Web server built on Mono and cross-platform
• GenHTTP - A lightweight, embeddable web server for quickly creating REST APIs

GUI - other

• CefSharp - HTML5, CSS3 and JS web browser powered by Chromium, for WinForms and WPF
• SharpBrowser - A full featured .NET web-browser built using C# and CefSharp

GUI - other

• Data Grid Extensions - Modular extensions for the WPF DataGrid control, like filtering, additional column events, extended star-size column behavior, and more...
• DeftSharp.Windows.Input - Listen Global keyboard / mouse events. simple to use. for Windows UI applications (WPF, MAUI, Avalonia)
• Extended WPF Toolkit™ - A rich collection of controls, components and utilities for creating WPF applications
• WPF - WPF is a .NET Core UI framework for building Windows desktop applications.

GUI - other

• .NET Interactive - .NET Interactive takes the power of .NET and embeds it into your interactive experiences.

GUI - other

• MessageFormat.NET - ICU MessageFormat implementation in .NET lets you write contextual UI messages (PCL library)
• ResX Resource Manager - The most popular free tool to localize all kind of applications with resx-based resources.

GUI - other

• CppSharp - Tools to surface C++ APIs to C#
• pythonnet - Python and .NET interop framework
• pinvoke - A library containing P/Invoke code for latest Windows OS.
• Pyrolite - This library allows your Java or .NET program to interface very easily with

GUI - other

• ClearScript - A library that makes it easy to add scripting to your .NET applications. It currently supports JavaScript (via V8 and JScript) and VBScript.
• Edge.js - Run .NET and Node.js code in-process on Windows, macOS, and Linux
• Jint - JavaScript interpreter for .NET which provides full ECMA 5.1 compliance and can run on any .NET platform.
• Jurassic - A implementation of the ECMAScript language and runtime. It aims to provide the best performing and most standards-compliant implementation of JavaScript for .NET.
• YantraJS - JavaScript Runtime (Similar to NodeJS) for .NET Standard, compiles JavaScript to IL, support for many ES6 features, generators, CommonJS modules, CSX modules and expression compiler.

GUI - other

• MailKit - A complete cross-platform mail stack including IMAP, POP3, SMTP, authentication and more. Built on top of MimeKit.
• MailKitSimplified - A fully-featured fluent wrapper for MailKit that makes sending _and receiving_ emails as simple as possible.
• MimeKit - A cross-platform .NET MIME creation and parser library with support for S/MIME, PGP, TNEF and Unix mbox spools.
• PreMailer.Net - C# library that moves your stylesheets to inline style attributes, for maximum compatibility with e-mail clients.
• StrongGrid - Client for SendGrid's v3 API. Not only allows you to send emails, but also allows you to bulk import contacts, manage lists and segments, create custom fields for your lists, etc. Also includes a parser for SendGrid Webhooks.

GUI - other

• CSCore - An advanced audio library, supporting playback/recording, decoding/encoding and processing of audio data in realtime (effects, visualizations, ...).
• TagLib# - TagLib# (aka taglib-sharp) is a library for reading and writing
• LibVLCSharp - Xamarin bindings for libvlc, the multimedia framework powering the VLC applications made by VideoLAN.
• NAudio - Playback, decode and encode audio in a variety of file formats such as MP3, MP4, WAV, AIFF, Speex, etc.
• Xabe.FFmpeg - .NET Standard wrapper for FFmpeg. It allows to process media without know how FFmpeg works, and can be used to pass customized arguments to FFmpeg from C# application. **[$]**
• Sonora - .NET Audio Framework for audio and MIDI playback, editing, and plugin integration.

GUI - other

• HiveMQtt - The HiveMQ C# MQTT client for .NET
• MQTTNet - A high performance .NET library for MQTT based communication. It provides a MQTT client and a MQTT server (broker).

GUI - other

• NetCoreServer - Ultra fast and low latency asynchronous socket server & client C# .NET Core library with support TCP, SSL, UDP, HTTP, HTTPS, WebSocket protocols and 10K connections problem solution (NETStandard).
• SharpPcap - Fully managed, cross platform (Windows, Mac, Linux) .NET library for capturing packets from live and file based devices.

GUI - other

• AutoMapper - A convention-based object-object mapper in .NET. https://automapper.org
• Mapperly - A .NET source generator for generating object mappings. No runtime reflection.
• Mapster - A high performance object mapper in .net

GUI - other

• MiniProfiler - A simple but effective mini-profiler for ASP.NET websites

GUI - other

• gRPC - us/aspnet/core/grpc)
• gRPCurl - gRPCurl is a command-line tool that lets you interact with gRPC servers. It's basically curl for gRPC servers.
• gRPC UI - gRPC UI is a command-line tool that lets you interact with gRPC servers via a browser. It's sort of like Postman, but for gRPC APIs instead of REST.

GUI - other

• Rx.NET - The Reactive Extensions (Rx) is a library for composing asynchronous and event-based programs using observable sequences and LINQ-style query operators
• Dynamic Data - Reactive Extensions (Rx) for collections

GUI - other

• CsvExport - Very simple & lightweight CSV exporter, Excel friendly, escapes text & quotes etc.
• Protobuf.NET - Protocol buffers is the name of the binary serialization format used by Google for much of their data communications
• Json.NET - Popular high-performance JSON framework for .NET
• Msgpack-Cli - MessagePack implementation for Common Language Infrastructure
• FlatSharp - Fast, idiomatic FlatBuffers implementation. Use .fbs files or attributes.
• F# Data - F# type providers for accessing XML, JSON, CSV and HTML files (based on sample documents) and for accessing WorldBank data
• Hyperion - A high performance polymorphic serializer for the .NET framework.
• Migrant - Fast and flexible serialization framework usable on undecorated classes.
• ObjectDumper.NET - Serializes in-memory object to C# code.
• FluentSerializer - A profile-based Serializer for multiple data-formats.

GUI - other

• Twilio-csharp - A C#/.NET Library for sending and receiving phone calls and text messages with Twilio.

GUI - other

• Stateless - Create state machines and lightweight state machine-based workflows directly in .NET code

GUI - other

• .NET Assembly Strong-Name Signer - Utility software to strong-name sign .NET assemblies, including assemblies you do not have the source code for.

GUI - other

• RazorLight - Open source template engine based on Microsoft's Razor parsing engine supporting .NET Standard 2.0
• DotLiquid - C# port of the Ruby Liquid templating language
• Morestachio - A full sized {{mustache}} like template engine with focus on extendibility.
• Fluid - Fluid is an open-source .NET template engine based on the Liquid template language.
• SmartFormat - A lightweight text templating library written in C# which can be a drop-in replacement for string.Format
• Handlebars.Net - A real .NET Handlebars engine

GUI - other

• Lean - Lean Engine is an open-source fully managed C# algorithmic trading engine built for desktop and cloud usage. https://www.quantconnect.com/lean/
• StockSharp - Trading and algorithmic trading open source platform (stock markets, forex, bitcoins and options). https://stocksharp.com

GUI - other

• Servy - A tool to turn any app into a native Windows service with powerful configuration and management options (a modern alternative to NSSM and WinSW).

GUI - other

• Silverfly - A pratt parser library.
• Pidgin - A lightweight, fast and flexible parsing library for C#, developed at Stack Overflow
• Superpower - A C# parser construction toolkit with high-quality error reporting
• CSLY - A light embedded C# lexer/parser generator.
• Parakeet - A recursive descent parsing library with operator overloading for C#.