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

Sentry SDK for Ruby

Distributing instrumentation tests to all your Androids.

Count your code, quickly.

A full-featured Crystal web framework that catches bugs for you, runs incredibly fast, and helps you write code that lasts.

Rack-based asset packaging system

PartyKit simplifies developing multiplayer applications

Website repository for Govdirectory - a crowdsourced and fact-checked directory of official governmental online accounts and services.

An open-source graph database

Website for DjangoGirls.org

🛠 Component code and tests for the Australian Government design system

EnvFile 3.0 is a plugin for JetBrains IDEs that allows you to set environment variables for your run configurations from one or multiple files.

Event-driven application platform for Kubernetes

Write unit and fuzz tests for Elm code.

Hierarchical Engine for Large-scale Infrastructure Co-Simulation (HELICS)

Code style checking for RSpec files

Hierarchical Engine for Large-scale Infrastructure Co-Simulation (HELICS)

Data Analysis in RUby

Nextstrain build for novel coronavirus (nCoV)

My first repository on GitHub.

AI-powered platform delivering personalized financial planning, tax optimization, and investment insights in real time

Dependency manager for the Crystal language

An API standard for single-agent reinforcement learning environments, with popular reference environments and related utilities (formerly Gym)

NVIDIA PhysX SDK

IntelliJ Plugin for Ceylon

A collection of composable React components for building interactive data visualizations

The authorization Gem for Ruby on Rails.

📱InAppBrowser for React Native (Android & iOS) 🤘

Mirror of Apache James Project

A simple, Git-powered wiki with a sweet API and local frontend.

Realtime Alerting for Graphite and Prometheus

A search-focused Android launcher

the ninja of .net dependency injectors

Fully portable & lightweight ZIM reader in Javascript

A modern Docker LAMP stack and MEAN stack for local development

Pyramid - A Python web framework

A web framework for Rust.

A use-package declaration for simplifying your .emacs

📝 A website for automatically generating elegant LaTeX resumes.

A transpiler that converts Python code into Java bytecode

Breeze is a numerical processing library for Scala.

Asynchronous Http and WebSocket Client library for Java

An interactive board with plugins focusing on replacing the need of multiple platforms for teaching, presenting, managing or explaining your ideas (Public Beta 🌎 )

Adds support for creating state machines for attributes on any Ruby class

Community designed ERCF v2

Fortio load testing library, command line tool, advanced echo server and web UI in go (golang). Allows to specify a set query-per-second load and record latency histograms and other useful stats.

📱  A strongly-typed, caching GraphQL client for iOS, written in Swift.

Server for the ListenBrainz project, including the front-end (javascript/react) code that it serves and all of the data processing components that LB uses.

Next generation distributed, event-driven, parallel config management!

:sparkler: Open scientific N-dimensional image processing :microscope:

An API focused facade that sits on top of an object model.