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

Space exploration, trading, and combat game.

Mirror of Apache RocketMQ

A JavaScript checker and optimizer.

A free open source IT asset/license management system

Easy and Repeatable Kubernetes Development

web development, streamlined

🗨️ Nextcloud Talk – chat, video & audio calls for Nextcloud

G-code generator for 3D printers (RepRap, Makerbot, Ultimaker etc.)

Extensible low-code framework for building business applications. Connect to databases, cloud storages, GraphQL, API endpoints, Airtable, etc and build apps using drag and drop application builder. Built using JavaScript/TypeScript. 🚀

The open-source, cross-platform API client for GraphQL, REST, WebSockets, SSE and gRPC. With Cloud, Local and Git storage.

🍱 Kanban-style project & personal management tool for Nextcloud, similar to Trello

The headless editor framework for web artisans.

📆 Calendar app for Nextcloud

Open Standard for Metadata. A Single place to Discover, Collaborate and Get your data right.

Lightning-fast and Powerful Code Editor written in Rust

Build highly concurrent, distributed, and resilient message-driven applications on the JVM

A VIM-inspired filemanager for the console

JRuby, an implementation of Ruby on the JVM

RIOT - The friendly OS for IoT

The pytest framework makes it easy to write small tests, yet scales to support complex functional testing

opam is a source-based package manager. It supports multiple simultaneous compiler installations, flexible package constraints, and a Git-friendly development workflow.

🌍 Planet Learning - Angular application

Signal — Private Messenger for Windows, Mac, and Linux

IPFS implementation in go

🎧 Open source music client! Available for both desktop & mobile!

Video.js - open source HTML5 video player

Panel: The powerful data exploration & web app framework for Python

OpenLayers

OpenMMLab Semantic Segmentation Toolbox and Benchmark.

The Grails Web Application Framework

The ZAP core project

Ansible is a radically simple IT automation platform that makes your applications and systems easier to deploy and maintain. Automate everything from code deployment to network configuration to cloud management, in a language that approaches plain English

CKAN is an open-source DMS (data management system) for powering data hubs and data portals. CKAN makes it easy to publish, share and use data. It powers catalog.data.gov, open.canada.ca/data, data.humdata.org among many other sites.

:zap: Universal Workflow Orchestration Platform — Code in any language, run anywhere. 900+ plugins for data, infrastructure, and AI automation.

Collabora Online is a collaborative online office suite based on LibreOffice technology. This is also the source for the Collabora Office apps for iOS and Android.

A fancy self-hosted monitoring tool

lightweight, powerful javascript datetimepicker with no dependencies

👽 API request builder - Helps you create your requests faster, saving you precious time on your development https://postwoman.io

👽 Open source API development ecosystem - https://hoppscotch.io

Collection of handy online tools for developers, with great UX.

Cloud-native search engine for observability. An open-source alternative to Datadog, Elasticsearch, Loki, and Tempo.

c:geo - The powerful Android geocaching app.

Routing and navigation for your React Native apps

🥑 ArangoDB is a native multi-model database with flexible data models for documents, graphs, and key-values. Build high performance applications using a convenient SQL-like query language or JavaScript extensions.

Flexible level editor

A flexible level editor

🦋 Rakudo – Raku on MoarVM, JVM, and JS

Build forms in React, without the tears 😭

The Cocoa Dependency Manager.