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

A collective list of free APIs

A linting tool for the web

💡 A hinting engine for the web

C++ websocket client/server library

The App Framework for Startups

AngularJS - HTML enhanced for web apps!

Mumble is an Open Source, low-latency, high quality voice chat software

PowerMock is a Java framework that allows you to unit test code normally regarded as untestable.

Voyager - The Missing Laravel Admin

The user-friendly command line shell.

Web based translation tool with tight version control integration.

Data validation using Python type hints

Compass is no longer actively maintained. Compass is a Stylesheet Authoring Environment that makes your website design simpler to implement and easier to maintain.

Play Framework

Play Framework

Fast data visualization and GUI tools for scientific / engineering applications

OpenID Connect (OIDC) identity and OAuth 2.0 provider with pluggable connectors

JSHint is a tool that helps to detect errors and potential problems in your JavaScript code

Reactive Microservices for the JVM

[mirror] A Tour of Go

Status, process, and documents for ECMA-262

Most popular Mocking framework for unit tests written in Java

:cloud: :rocket: :bar_chart: :chart_with_upwards_trend: Evaluating state of the art in AI

Command-line JSON processor

A Chaos Engineering Platform for Kubernetes.

Realm is a mobile database: a replacement for Core Data & SQLite

Redefined chart library built with React and D3

Multi functional app to find duplicates, empty folders, similar images etc.

nose is nicer testing for python

Warzone 2100 - a free and open source real time strategy game.

The Select Component for React.js

A cross-platform, linkable library implementation of Git that you can use in your application.

Scrobble music all around the web!

The participatory democracy framework. A generator and multiple gems made with Ruby on Rails.

Ivy - a generic completion frontend for Emacs, Swiper - isearch with an overview, and more. Oh, man!

A tool to enforce Swift style and conventions.

Traccar GPS Tracking System

Annotation processor to create immutable objects and builders. Feels like Guava's immutable collections but for regular value objects. JSON, Jackson, Gson, JAX-RS integrations included

Penpot - The Open-Source design & prototyping platform

AlaSQL.js - JavaScript SQL database for browser and Node.js. Handles both traditional relational tables and nested JSON data (NoSQL). Export, store, and import data from localStorage, IndexedDB, or Excel.

The Ruby Programming Language

🔥🔥🔥AI-driven database tool and SQL client, The hottest GUI client, supporting MySQL, Oracle, PostgreSQL, DB2, SQL Server, DB2, SQLite, H2, ClickHouse, and more.

SpotBugs is FindBugs' successor. A tool for static analysis to look for bugs in Java code.

A Python Interpreter written in Rust

High-Performance server for NATS, the cloud native messaging system.

High-Performance server for NATS.io, the cloud and edge native messaging system.

Official vibe.d development

ClosedXML makes it easier for developers to create Excel 2007+ (.xlsx, .xlsm, etc) files. It provides a nice object oriented way to manipulate the files (similar to VBA) without dealing with the hassles of XML Documents. It can be used by any .NET languag