Projects in Awesome Lists tagged with cats-effect

https://github.com/monix/monix

Asynchronous, Reactive Programming for Scala and Scala.js.

cats cats-effect fp functional-programming monix reactive-programming reactive-streams reactivex scala typelevel

Last synced: 14 May 2025

https://github.com/typelevel/skunk

A data access library for Scala + Postgres.

cats cats-effect database fs2 functional-programming postgres scala scodec typelevel

Last synced: 14 May 2025

https://github.com/dropbox/goebpf

Library to work with eBPF programs from Go

bpf cats cats-effect ebpf go golang golang-library perfevents xdp xdpdump

Last synced: 15 May 2025

https://github.com/gvolpe/trading

💱 Trading application written in Scala 3 that showcases an Event-Driven Architecture (EDA) and Functional Programming (FP)

apache-kafka apache-pulsar cats-effect eda elm elm-architecture elm-lang event-driven-architecture fp fs2 functional-programming grafana open-tracing prometheus scala scala3 web-sockets websockets

Last synced: 15 May 2025

https://github.com/7mind/izumi

Productivity-oriented collection of lightweight fancy stuff for Scala toolchain

cats-effect config dependency-injection distage-testkit fp-testing framework generative izumi logger logging logging-library pper productivity roles rpc scala scalajs slf4j structured-logging zio

Last synced: 26 Feb 2026

https://github.com/gvolpe/pfps-shopping-cart

:shopping_cart: The Shopping Cart application developed in the book "Practical FP in Scala: A hands-on approach"

cats cats-effect finally-tagless fp fs2 functional-programming http4s newtypes refined skunk tagless tagless-final typeclass-derivation typeclasses

Last synced: 15 May 2025

https://github.com/profunktor/redis4cats

:bookmark: Redis client built on top of Cats Effect, Fs2 and Lettuce

cats-effect client effects fs2 lettuce redis scala stream streaming

Last synced: 09 Apr 2026

https://github.com/softwaremill/kmq

Kafka-based message queue

cats-effect java kafka message-queue reactive-streams scala

Last synced: 16 May 2025

https://github.com/typelevel/natchez

functional tracing for cats

cats cats-effect honeycomb jaeger opentracing scala tracing

Last synced: 17 Apr 2026

https://github.com/belyalov/tinyweb

Simple and lightweight HTTP async server for micropython

cats cats-effect esp32 esp8266 http-server iot micropython rest-api restful web-server

Last synced: 06 Apr 2025

https://github.com/typelevel/otel4s

An OpenTelemetry library for Scala based on Cats-Effect

cats cats-effect metrics opentelemetry scala tracing typelevel

Last synced: 11 Apr 2026

https://github.com/avast/scala-server-toolkit

Functional programming toolkit for building server applications in Scala.

cats-effect functional-programming scala server toolkit

Last synced: 16 May 2025

https://github.com/gvolpe/pfps-examples

:izakaya_lantern: Standalone examples shown in the book "Practical FP in Scala: A hands-on approach"

cats cats-effect cats-mtl fp fs2 functional-programming monocle newtypes refined

Last synced: 13 Apr 2025

https://github.com/stryker-mutator/stryker4s

Mutation testing for Scala

cats-effect hacktoberfest mutation-testing sbt sbt-plugin scala stryker test-automation testing testing-tools unit-testing

Last synced: 05 Apr 2025

https://github.com/typelevel/cats-effect-testing

Integration between cats-effect and test frameworks

cats cats-effect minitest scala scalatest specs2 utest

Last synced: 15 May 2025

https://github.com/trace4cats/trace4cats

Distributed app tracing implementation in pure scala using cats-effect

cats cats-effect graalvm jaeger native-image opencensus opentelemetry opentracing scala tracing

Last synced: 15 May 2025

https://github.com/kubukoz/sup

Composable, purely functional healthchecks in Scala.

cats cats-effect fp functional functional-programming health healthcheck scala typelevel

Last synced: 06 Apr 2025

https://github.com/augustjune/canoe

Functional Telegram Bot API for Scala

bot cats cats-effect fs2 functional-programming scala telegram

Last synced: 19 Jul 2025

https://github.com/timwspence/cats-stm

A STM implementation for Cats Effect

cats cats-effect functional-programming monad scala software-transactional-memory transactional-memory

Last synced: 04 Apr 2025

https://github.com/davenverse/fuuid

Functional UUID's for Scala

cats cats-effect doobie http4s scala uuid

Last synced: 07 Apr 2025

https://github.com/armanbilge/calico

Pure, reactive UI library for Scala.js

cats-effect fp frontend scala-js ui

Last synced: 05 Apr 2025

https://github.com/takapi327/ldbc

ldbc is Pure functional JDBC layer with Cats Effect 3 and Scala 3.

cats-effect cats-effect-3 database dotty functional-programming jdbc mysql sbt sbt-plugin scala scala3 typelevel

Last synced: 23 May 2026

https://github.com/Banno/kafka4s

Functional programming with Kafka and Scala

cats cats-effect fp fs2 functional-programming kafka scala stream-processing

Last synced: 04 Apr 2025

https://github.com/apimorphism/telegramium

Telegramium or F[ Tg ] - pure functional Telegram Bot API implementation for Scala.

cats cats-effect functional-programming scala telegram telegram-bot-api

Last synced: 02 May 2026

https://github.com/monix/monix-bio

Asynchronous data type with typed errors.

cats-effect functional-programming monix scala typelevel

Last synced: 03 Apr 2025

https://github.com/sloshy/fs2-es

Event sourcing utilities for FS2

cats-effect event-sourcing events fs2 scala state-machine state-management streaming

Last synced: 26 Oct 2025

https://github.com/polyvariant/sttp-oauth2

OAuth2 client library implemented in Scala using sttp

cats-effect oauth2 scala sttp

Last synced: 17 Dec 2025

https://github.com/cr-org/neutron

:stars: Purely functional Apache Pulsar client for Scala built on top of Fs2

apache cats-effect dhall fp fs2 nix pulsar scala typelevel

Last synced: 07 Apr 2025

https://github.com/usommerl/graalnative4s

Employ Scala for serverless applications

cats cats-effect circe ciris cloud-run graal graal-native graalvm graalvm-native-image http4s odin scala serverless tapir upx

Last synced: 19 Jan 2026

https://github.com/armanbilge/epollcat

minimum viable runtime

cats-effect fs2 io networking scala-native

Last synced: 14 Jan 2026

https://github.com/datadog4s/datadog4s

Making great monitoring easy in functional Scala

cats cats-effect datadog datadog-metrics functional-programming http4s monitoring scala

Last synced: 07 Apr 2025

https://github.com/evolution-gaming/scache

Cache in Scala with cats-effect

cache cats cats-effect scala

Last synced: 28 Feb 2026

https://github.com/geirolz/fly4s

A lightweight, simple and functional wrapper of Flyway using cats effect.

cats cats-effect data database database-migrations db flyway flyway-migrations flywaydb functional-programming persistence scala

Last synced: 11 Apr 2025

https://github.com/evolution-gaming/akka-effect

Cats-Effect & Akka interop

akka cats cats-effect scala

Last synced: 12 Oct 2025

https://github.com/profunktor/console4cats

:computer: Effect-type agnostic Console I/O for Cats Effect (archived, use Cats Effect 3 instead)

cats cats-effect console io

Last synced: 14 Jan 2026

https://github.com/satabin/swam

WebAssembly engine in Scala

cats cats-effect fs2 scala scodec wasm wast webassembly

Last synced: 19 Apr 2025

https://github.com/permutive-engineering/fs2-pubsub

Google Cloud Pub/Sub stream-based client built on top of cats-effect, fs2 and http4s.

cats-effect fp fs2 google-pubsub scala streaming

Last synced: 09 May 2025

https://github.com/evolution-gaming/cats-helper

Helpers for cats & cats-effect

cats cats-effect scala tagless-final

Last synced: 29 Oct 2025

https://github.com/lichess-org/lila-search

Keep elasticsearch threads out of your web facing app, kids

cats-effect chess elasticsearch functional-programming lichess scala scala3 smithy smithy4s typelevel

Last synced: 06 Jul 2025

https://github.com/kubukoz/spotify-next

Small CLI app for filtering out music on Spotify.

cats-effect cats-mtl cats-tagless cli decline http4s scala spotify tagless-final

Last synced: 09 May 2025

https://github.com/buntec/ff4s

A purely functional web UI library for Scala.js

cats-effect frontend functional-programming scala scalajs

Last synced: 05 Jul 2025

https://github.com/evolution-gaming/skafka

Scala wrapper for kafka consumer and producer

cats cats-effect kafka scala

Last synced: 17 Jan 2026

https://github.com/lichess-org/lila-fishnet

Proxy between lila and fishnet move clients

cats cats-effect chess fishnet functional-programming lichess typelevel

Last synced: 09 Apr 2025

https://github.com/armanbilge/schrodinger

Give your cats a set of dice

cats cats-effect probabilistic-programming

Last synced: 07 May 2025

https://github.com/armanbilge/fs2-dom

Idiomatic Cats Effect + FS2 integrations for Web APIs

cats-effect fs2 scala-js web-apis

Last synced: 21 Aug 2025

https://github.com/oleg-py/stm4cats

STM monad for cats-effect

cats cats-effect fp functional-programming scala software-transactional-memory

Last synced: 08 Oct 2025

https://github.com/kubukoz/flawless

WIP Delightful, purely functional testing no-framework. Don't even try to use it at work!

cats-effect fp functional-programming pure-fp scala testing

Last synced: 14 Jan 2026

https://github.com/hnaderi/lepus

Your principled, purely functional, non-blocking RabbitMQ client for scala, scala js and scala native built on top of fs2

amqp amqp0-9-1 cats-effect functional-programming rabbitmq rabbitmq-client scala scala-js scala-native scalajs scalanative typelevel

Last synced: 11 Mar 2026

https://github.com/polyvariant/doobie-quill

Integration between Doobie and Quill libraries

cats cats-effect doobie functional-programming jdbc pure-fp quill scala

Last synced: 14 Jan 2026

https://github.com/igor-vovk/connect-rpc-scala

HTTP (browser-compatible) server and client for gRPC services written in Scala that follows Connect protocol specification and supports gRPC Transcoding.

cats-effect connectrpc fs2-grpc grpc grpc-transcoding http4s netty protobuf scala scalapb zio zio-grpc

Last synced: 28 Jul 2025

https://github.com/regis-leray/fs2-ftp

Simple client for Ftp/Ftps/Sftp

cats cats-effect fs2 ftp ftp-client ftps scala sftp

Last synced: 16 Jul 2025

https://github.com/balmungsan/scala-functional-programming-tutorial

Functional Programming in Scala Tutorial

cats cats-effect circe fp fs2 functional-programming http4s scala shapeless tutorial

Last synced: 13 Apr 2025

https://github.com/armanbilge/porcupine

Skunk-inspired library for SQLite on JVM, Node.js, and Native

cats-effect scala scala-native scalajs sqlite

Last synced: 13 Apr 2025

https://github.com/gvolpe/classy-optics

:mag_right: Source code shown at my talks at Scale by the Bay 2018 and Scalar 2019

cats cats-effect cats-mtl classy-lenses error-handling http4s meow-mtl optics rio zio

Last synced: 22 Mar 2025

https://github.com/daenyth/intro-cats-effect

Slides and video recording for my "Intro to Cats-Effect" talk

cats cats-effect functional-programming scala slides

Last synced: 14 Apr 2025

https://github.com/etspaceman/kinesis4cats

A comprehensive Scala library for Kinesis

cats cats-effect kinesis scala

Last synced: 06 Jun 2026

https://github.com/belyalov/open-zwave-mqtt

A bridge between ZWave and MQTT networks

cats cats-effect iot mqtt mqtt-network zwave zwave-network

Last synced: 25 Apr 2025

https://github.com/durban/choam

Experiments with composable lock-free concurrency

cats-effect concurrency concurrent-programming fp functional-programming scala software-transactional-memory stm

Last synced: 30 May 2026

https://github.com/evolution-gaming/kafka-flow

library for reliable processing records received from kafka

cats cats-effect kafka kafka-streams scala

Last synced: 23 Apr 2025

https://github.com/7mind/idealingua-v1

IdeaLingua RPC for Scala, TypeScript, C#, Go

api cats-effect compiler csharp generative go http4s idealingua idl izumi json pper productivity rpc scala scalajs transpiler typescript zio

Last synced: 06 Mar 2025

https://github.com/filosganga/batcher

Batch similar requests together transparently

cats-effect concurrency fs2 scala scalability typelevel

Last synced: 16 Mar 2025

https://github.com/ovotech/comms-aws

AWS scala native implementation

aws cats-effect comms-circleci company-kaluza fs2 http4s scala

Last synced: 20 Oct 2025

https://github.com/neandertech/jsonrpclib

A cross-platform (JVM, JS, Native) pure-Scala JsonRPC library, made with Cats Effect, fs2, and jsoniter

cats-effect fs2 jsoniter-scala jsonrpc scala scala-native scalajs

Last synced: 10 Apr 2025

https://github.com/gbogard/scalajs-idb

A Scala.JS interface for IndexedDB

cats-effect indexeddb scala scalajs

Last synced: 11 Apr 2026

https://github.com/otobrglez/tiny-aria2

tiny-aria2 is a small and UI for aria2.

aria2 aria2c aria2c-rpc cats-effect scala

Last synced: 17 Aug 2025

https://github.com/evolution-gaming/scassandra

Cassandra client in scala

cassandra cats cats-effect client scala

Last synced: 23 Apr 2025

https://github.com/polyvariant/pitgull

Automatic housekeeping for your gitlab repositories.

cats-effect dhall fs2 gitlab scala scala-steward sttp tapir

Last synced: 05 Aug 2025

https://github.com/fancellu/http4s-circe-example

Example of http4s server with various endpoints

cats-effect circe fs2 http4s http4s-client http4s-munit log4cats munit sbt-resolver scalatags

Last synced: 25 Apr 2025

https://github.com/andimiller/whales

a docker client for cats

cats cats-effect docker

Last synced: 08 May 2025

https://github.com/pureharm/pureharm-movie-server

Example of an application web server written in pure functional Scala using the typelevel stack

cats-effect fs2 functional-programming postgresql pureharm scala server skunk

Last synced: 13 May 2025

https://github.com/akiomik/cats-nio-file

A thin scala wrapper for Java NIO.2, built on cats-effect 🐱

cats cats-effect java-nio

Last synced: 13 Aug 2025

https://github.com/ollls/quartz-h2

Asynchronous Java NIO http/2 only packet streaming server with TLS encryption implemented as Scala CATS effect. Direct native translation of fs2 stream chunks into http2 packets ( inbound and outbound ).

cats-effect http http-server http2 multipart-uploads rest scala tls

Last synced: 12 Aug 2025

https://github.com/itv/servicebox

Scala library to control docker containers programmatically

cats cats-effect cst docker integration-testing io-monad testing-tools

Last synced: 12 Apr 2025

https://github.com/peregin/velocorner.com

The cycling platform.

cats-effect cycling go highcharts kotlin ktor nosql play-framework react rust scala strava swagger withings

Last synced: 06 May 2025

https://github.com/lloydmeta/http4s-doobie-docker-scratchpad

Playing around with http4s + doobie + docker

cats-effect crud docker doobie fp functional-programming http4s pureconfig scala

Last synced: 27 Oct 2025

https://github.com/geirolz/toolkit

A Scala 3, lightweight and functional non-intrusive library to build typed and declarative Scala application with managed resources and dependencies

application application-framework cats cats-effect functional-programming microservice microservices resources scala service toolkit

Last synced: 20 Aug 2025

https://github.com/weso/srdf

Simple RDF interface

cats cats-effect rdf rdf-interface rdf-libraries scala

Last synced: 08 Apr 2025

https://github.com/evolution-gaming/smetrics

Generic interface to abstract from metrics vendors and their implementations

cats cats-effect prometheus scala

Last synced: 23 Apr 2025

https://github.com/barambani/http4s-extend

Type classes, syntax and instances to help integrating http4s based api with 3rd party dependencies

cats cats-effect functional-programming http4s monix scala scalaz-task

Last synced: 30 Oct 2025

https://github.com/kevin-lee/effectie

A Tool for FP Effect Libraries

cats cats-effect effect finally-tagless fp functional-programming io-monad referential-transparency scala tagless-final

Last synced: 13 Apr 2025

https://github.com/kubukoz/dropbox-demo

A showcase project for my talk about typelevel stack architecture.

cats-effect cats-effect-3

Last synced: 19 Mar 2025

https://github.com/lenguyenthanh/fide

Experimental FIDE Api

cats cats-effect chess fide functional-programming scala skunk smithy smithy4s typelevel

Last synced: 13 Apr 2025

https://github.com/pure4s/uuid4s

Purely functional UUID's for Scala

cats cats-effect circe fast-uuid functional-programming library scala uuid

Last synced: 19 Jan 2026

https://github.com/sentenza/cats-http4s-crypto

:moneybag: A sample microservice written in Scala using Cats, HTTP4S, Doobie that implements an application to compute Crypto/Fiat currency conversion rates

cats-effect circe doobie fs2-grpc hacktoberfest http4s pureconfig scala