Content Management System

Other

• Drupal Coding Standards
• Octobercms Developer Guide
• WordPress Coding Standards
• Magento Coding Standards

Development Environment

Git

• Few Rules from Git Documentation - Coding guidelines used in the Git project.
• Git Style Guide - Git usage and style recommendations.

PowerShell

• The PowerShell Best Practices and Style Guide - The Unofficial PowerShell Best Practices and Style Guide.

Shell

• Shell Style Guide - Shell script style guide.

Frameworks

Other

• Symfony Coding Standards
• Angular Style Guide

Platforms

Android

• Android Guidelines - Architecture and code guidelines we use at ribot when developing for Android.
• Xmartlabs Android Style Guide - Style guide for Android by Xmartlabs.

API

• Google Cloud API Design Guide - A general design guide for networked APIs provided by Google.
• Microsoft REST API Guidelines - The Microsoft REST API Guidelines.
• API Security Checklist - Checklist of the most important security countermeasures when designing, testing, and releasing your API.
• HAL - A simple format that gives a consistent and easy way to hyperlink between resources in your API.

Arduino

• Arduino style guide - General coding style guidance for Arduino.

Frontend Development

• LESS Coding Guidelines
• Google HTML/CSS Style Guide
• Guidelines for Responsive Web Design - Guide to designing for screen size, platform, and orientation.
• Yelp Styleguide - Design system for consistent product UI.
• BEM - Block Element Modifier - A methodology that helps you to create reusable components and code sharing in front‑end development.
• U.S. Web Design Standards - Open source UI components and visual style guide for U.S. government websites.
• Frontend Guidelines - Some HTML, CSS and JS best practices.
• Airbnb CSS / Sass Styleguide - A mostly reasonable approach to CSS and Sass.
• HTML Style Guide - A style guide which helps you write better, performant, structured, scalable and maintainable HTML.
• CoffeeScript Style Guide - A collection of best-practices and coding conventions for the CoffeeScript programming language.
• Front-End Checklist - Pre-launch checklist for front-end projects.
• Web Content Accessibility Guidelines (WCAG) 2.1 - Recommendations for making web content more accessible.
• CSS Guidelines - High-level advice and guidelines for writing sane, manageable, scalable CSS.
• Sass Guidelines - An opinionated styleguide for writing sane, maintainable and scalable Sass.

Google

• Google-related developer documentation - This style guide provides editorial guidelines for writing clear and consistent Google-related developer documentation.

Java

• JavaEE Specification - Official specification for Java EE.

Linux

• Linux kernel coding style - Coding style for the Linux kernel.

Mailchimp

• Mailchimp Content Style Guide - Content style guidelines for Mailchimp.

MongoDB

• Mongo Style Guide - Style guidelines for MongoDB usage.

Node.js

• Microsoft + Node.js Guidelines - Engineering guidelines for building Node.js apps.
• Node.js Style Guide - A guide for styling your Node.js / JavaScript code.

Other

• WebAppSec/Secure Coding Guidelines - Secure coding guidelines for web applications.
• Robot Framework User Guide - Official Robot Framework user guide.
• Indent style
• Project Guidelines - A set of best practices for JavaScript projects.
• CodeQL Coding Standards

SQL

• SQL Style Guide - SQL style and formatting guidelines.

Programming Languages

Ada

• Ada Programming/Coding standards - Suggestions of Ada programming guidelines

Brainfuck

• BF Style Guide - Guidelines for writing and formatting Brainfuck code.

C

• C Coding Standard - Conventions and best practices for C code.
• C Programming/Structure and style - Structural and style recommendations for C programs.
• Making The Best Use of C - This chapter provides advice on how best to use the C language when writing GNU software.

C#

• C# Coding Conventions - Official C# coding style conventions.
• C# Style Guide - Community C# style guide.

C++

• Google C++ Style Guide - C++ coding standards and best practices.
• C++ Core Guidelines - A set of tried-and-true guidelines, rules, and best practices about coding in C++.
• LLVM C++ Coding Standards - Coding standards for the LLVM project.
• Mozilla C++ Coding style - C++ coding style guidelines for Mozilla codebases.
• Chromium C++ style guide - C++ style guide for the Chromium project.
• Webkit C++ Code Style Guidelines - C++ code style guidelines for WebKit.
• NASA C++ Coding Standards and Style Guide - C++ coding standards for safety-critical systems.
• OceanBase C++ Coding Standards - C++ coding standards for OceanBase.

Clojure

• The Clojure Style Guide - A community coding style guide for the Clojure programming language.

Common Lisp

• Google Common Lisp Style Guide

D

• The D Style - A set of style conventions for writing D programs.

Dart

• Effective Dart - Recommendations for consistent, idiomatic Dart code.

Delphi

• Delphi's Object Pascal Style Guide - Object Pascal coding style guidelines.

Elixir

• Elixir Styleguide - Community Elixir coding style guide.

Emacs Lisp

• Emacs Lisp Style Guide - Community style guide for Emacs Lisp.
• Elisp Guide - Guide to writing Emacs Lisp.

Erlang

• Erlang Coding Guidelines
• Secure Coding Guidelines - Writing secure Erlang code, describing common pitfalls and weaknesses best avoided.

F#

• The F# Component Design Guidelines - Official design and style guidelines for F#.

Fortran

• Fortran Best Practices - Style guide and best practices for modern Fortran programs.

Go

• Uber Go Style Guide - Patterns and conventions used in Go code at Uber.
• Effective Go - Idioms and best practices for Go.
• Go Standard Project Layout - Basic layout for Go applications.
• Google Go Style Guide - Google's coding standards for source code in Go.

Groovy

• Apache Groovy style guide - Style guide for writing idiomatic Groovy code.

Haskell

• Haskell Programming guidelines - Best practices for Haskell programming.

Java

• Google Java Style Guide - Google's coding standards for source code in the Java™ Programming Language.
• Java Programming Style Guide
• Alibaba-Java-Coding-Guidelines - A guide for Java developers.

JavaScript

• Google JavaScript Style Guide - This document serves as the complete definition of Google's coding standards for source code in the JavaScript programming language.
• jQuery Core Style Guide - JavaScript style rules for open-source contributors.
• JavaScript Style Guides And Beautifiers - Roundup of JavaScript style guides and formatting tools.
• JavaScript Style Guide and Coding Conventions - General JavaScript coding conventions and best practices.
• AngularJS Style Guide - Community-driven set of best practices for AngularJS application development.
• Airbnb JavaScript Style Guide - A mostly reasonable approach to JavaScript.
• JavaScript Clean Code - Software engineering principles, from Robert C. Martin's book Clean Code, adapted for JavaScript.
• Code Conventions for the JavaScript - A set of coding conventions and rules for use in JavaScript programming.
• JavaScript The Right Way - An easy-to-read, quick reference for JS best practices, accepted coding standards, and links around the Web.

JSON

• Google JSON Style Guide - Recommendations for JSON formatting and usage.

Julia

• Blue Style - Community style guide for Julia packages.

Kotlin

• Coding Conventions - Official Kotlin coding conventions.

Lua

• Lua Style Guide - Community Lua coding style guide.

Markdown

• Google Markdown Style Guide - Style guide for Google-originated projects using Markdown.
• GitLab Markdown Style Guide - Markdown Style Guide for about.GitLab.com.

.NET

• .NET Secure Coding Guidelines - Guidance for writing secure .NET code.
• .NET Naming Guidelines - Naming conventions for .NET libraries.
• .NET Standard - Formal specification of .NET APIs that are available across .NET implementations.

Nim

• Nim Style Guide - Style conventions and RFC for Nim code.

Objective-C

• Objective-C Style guide - Style guide & coding conventions for Objective-C projects.
• Google Objective-C Style Guide - Objective-C coding standards and conventions.
• NYTimes Objective-C Style Guide - The Objective-C Style Guide used by The New York Times.

Pascal

• GNU Pascal Coding Standards - GNU Pascal standards used by GNU Pascal project.

Perl

• perlstyle - Perl style guidelines.
• Perl Elements to Avoid - A list of unrecommended practices, and what to do instead.
• Perl best practices v4 - Slides by Randal Schwartz, based on the book by Damian Conway.

PHP

• Clean Code PHP - Clean Code concepts adapted for PHP.
• PHP FIG - PHP Standards Recommendations.

Python

• Google Python Style Guide - Python coding standards.
• The Hitchhiker's Guide to Python - Highly regarded Python best practices guide.
• Style Guide for Python Code - Official Python style guide (PEP 8).

R

• Google's R Style Guide - R style conventions.

Ruby

• Ruby Style Guide - Airbnb's Ruby Style Guide.
• Ruby Style Guide - A community-driven Ruby coding style guide.
• The Ruby Style Guide - A community-driven Ruby coding style guide.

Rust

• Rust Style Guide
• Rust API Guidelines - Guidelines for designing public Rust APIs.

Scala

• Effective Scala - Best practices and patterns for Scala.
• Databricks Scala Guide - Databricks Scala Coding Style Guide.
• Scala Best Practices - Recommendations and patterns for Scala development.

Solidity

• Solidity Style Guide - Style guidelines for Solidity smart contracts.
• Solcurity Standard - Security checklist and guidelines for Solidity smart contracts.

Swift

• Swift - GitHub Official Swift style and conventions.
• Swift Style Guide - LinkedIn Official Swift Style Guide.
• API Design Guidelines - API design principles for Swift.
• Swift style guide - Community Swift style guide.
• Metova's Swift style guide - Swift style guide for Xcode (archived, deprecated 2022).
• Xmartlabs Swift Style Guide - Swift language style guide & coding conventions followed by Xmartlabs.

TypeScript

• Google TypeScript Style Guide - TypeScript Style Guide used at Google's.
• TypeScript deep dive - Style Guide - An unofficial TypeScript Style Guide.
• TypeScript Lang - Do's and Don'ts - Suggestions from TypeScript Lang organization.

Visual Basic

• Visual Basic/Coding Standards - Coding standards for Visual Basic projects.

XML

• Google XML Document Format Style Guide - XML formatting and style guidance.

Tools

Other

• ESLint - The pluggable linting utility for JavaScript and JSX.
• Laravel Pint - An opinionated PHP code style fixer for minimalists.
• Checkstyle - Tool for checking Java source code for adherence to a Code Standard or set of validation rules.
• Conventional Changelog - Generate changelogs from Git commits.
• EasyCodingStandard - The Easiest Way to Use Any Coding Standard.
• PHP_CodeSniffer - The tool for detecting and fixing the violations of the specified standards in PHP code.
• semantic-release - Automated versioning and publishing from commits.
• ShellCheck - A shell script static analysis tool.
• Agents.md - A simple, open format for guiding coding agents.
• JavaScript Standard Style - One JavaScript Style to Rule Them All.
• PHP Coding Standards Fixer - The PHP Coding Standards Fixer (PHP CS Fixer) tool fixes your code to follow standards.
• RuboCop - A Ruby static code analyzer and formatter, based on the community Ruby style guide.