Best Self-Hosted Team Chat & Messaging Tools in 2026

Real-time messaging platforms for team communication, group chats, and workplace collaboration.

The top-rated pick is Discourse with 46,646 GitHub stars.

3 self-hosted team chat & messaging tools — ranked by GitHub stars. Browse all

Discourse

A platform for community discussion. Free, open, simple.

Alternative to:

Discord

Rocket.Chat

The communications platform that puts data protection first.

Alternative to:

Skype

Zulip

Open-source team chat with a unique topic-based threading model that makes it easy to follow multiple conversations.

Alternative to:

Slack

Why self-host?

Self-hosting puts you in control. You own your data, avoid vendor lock-in, and eliminate recurring subscription costs. For teams handling sensitive data or operating under strict compliance requirements, running your own infrastructure is often the only viable option.

Want to compare all open source options including cloud-hosted ones? See the best open source team chat & messaging tools →