Communication & Chat
8 self-host opensource apps in this category
The Secure CommsOS™ for mission-critical operations
Mattermost is an open source platform for secure collaboration across the entire software development lifecycle..
Your AI second brain. Self-hostable. Get answers from the web or your docs. Build custom agents, schedule automations, do deep research. Turn any online or local LLM into your personal, autonomous AI (gpt, claude, gemini, llama, qwen, mistral). Get started - free.
Synapse: Matrix homeserver written in Python/Twisted.
Take control over your live stream video by running it yourself. Streaming + chat out of the box.
A self-hosted, offline, ChatGPT-like chatbot. Powered by Llama 2. 100% private, with no data leaving your device. New: Code Llama support!
Web dashboard for Hermes Agent — multi-platform AI chat, session management, scheduled jobs, usage analytics & channel configuration (Telegram, Discord, Slack, WhatsApp)
Open-source and local-first Slack and Notion alternative that puts you in control of your data