
Instant messaging platform. Backend in Go. Clients: Swift iOS, Java Android, JS webapp, scriptable command line; chatbots

Tinode is a modern, open-source instant messaging platform designed as a federated alternative to XMPP with emphasis on mobile communication. It provides a complete messaging stack with backend in Go and native clients for iOS, Android, web, and command-line interfaces.
Tinode is ideal for developers and organizations seeking open-source messaging alternatives to proprietary platforms, enterprises requiring self-hosted communication infrastructure, and projects needing cross-platform instant messaging capabilities with federation support.

Your self-hosted, globally interconnected microblogging community

The Secure CommsOS™ for mission-critical operations

Mattermost is an open source platform for secure collaboration across the entire software development lifecycle..

Huly — All-in-One Project Management Platform (alternative to Linear, Jira, Slack, Notion, Motion)

Zulip server and web application. Open-source team chat that helps teams stay productive and focused.

A customizable life embetterment robot.

A list of Free Software network services and web applications which can be hosted on your own servers

Get up and running with Kimi-K2.5, GLM-5, MiniMax, DeepSeek, gpt-oss, Qwen, Gemma and other models.

Production-ready platform for agentic workflow development.

User-friendly AI Interface (Supports Ollama, OpenAI API, ...)

Virtual whiteboard for sketching hand-drawn like diagrams

JavaScript API for Chrome and Firefox

The world’s fastest framework for building websites.

:house_with_garden: Open source home automation that puts local control and privacy first.

Playwright is a framework for Web Testing and Automation. It allows testing Chromium, Firefox and WebKit with a single API.

Open Source Continuous File Synchronization