
Synapse: Matrix homeserver written in Python/Twisted + Rust

Synapse is an open source Matrix homeserver implementation that enables secure, interoperable, and federated real-time communications. Written in Python and Twisted with Rust components, it provides a complete server solution for deploying Matrix-based communication networks.
Synapse is designed for system administrators, organizations, and communities seeking to deploy a self-hosted, open standards-based communication platform. It serves enterprises requiring data control, open source advocates valuing interoperability, and institutions with compliance requirements for secure federated messaging.

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

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..

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

A simple server for sending and receiving messages in real-time per WebSocket. (Includes a sleek web-ui)

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

Fair-code workflow automation platform with native AI capabilities. Combine visual building with custom code, self-host or cloud, 400+ integrations.

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

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

Virtual whiteboard for sketching hand-drawn like diagrams

The Postgres development platform. Supabase gives you a dedicated Postgres database to build your web, mobile, and AI applications.

High performance self-hosted photo and video management solution.

The world’s fastest framework for building websites.

A fancy self-hosted monitoring tool

Open Source Continuous File Synchronization