Help out your favorite open source projects and become a better developer while doing it.

Cataclysm - Dark Days Ahead. A turn-based survival game set in a post-apocalyptic world.

Entity Framework Core is a lightweight and extensible version of the popular Entity Framework data access technology

The Crystal Programming Language

The Crystal Programming Language

The Python programming language

The official bug tracker for the Scala programming language.

Node.js JavaScript runtime :sparkles::turtle::rocket::sparkles:

An easy-to-use multi SQL dialect ORM for Node.js

Delightful JavaScript Testing.

An open-source distributed JSON document database with a pleasant and powerful query language.

Open Source real-time strategy game engine for early Westwood games such as Command & Conquer: Red Alert written in C# using SDL and OpenGL. Runs on Windows, Linux, *BSD and Mac OS X.

Scalable datastore for metrics, events, and real-time analytics

Official repository for IPython itself. Other repos in the IPython organization contain things like the website, documentation builds, etc.

Nix, the purely functional package manager

Terraform Azure Resource Manager provider

Official upstream development repository for Cabal and cabal-install

Cocos2d-x is a suite of open-source, cross-platform, game-development tools used by millions of developers all over the world.

A place to report bugs on websites.

Traccar GPS Tracking System

Ballerina is a compiled, transactional, statically and strongly typed programming language with textual and graphical syntaxes.

Signal — Private Messenger for Windows, Mac, and Linux

The new Windows Terminal, and the original Windows console host -- all in the same place!

Blazing fast, instant realtime GraphQL APIs on Postgres with fine grained access control, also trigger webhooks on database events.

Interactive UI component dev & test: React, React Native, Vue, Angular

📓 The UI component explorer. Develop, document, & test for React, Vue, Angular, Ember, Web Components, & more!