Best of 2026
Best open-source Team Chat apps
The 7 highest-scoring open-source Team Chat apps on AppFinder, each with the facts behind its position.
Positions come from our organic score, led by people: community upvotes, visitor ratings and feedback, then how complete the listing is and how recently it was updated. Verification, Pro plans, team ratings and advertising are not inputs, and nothing paid can add an upvote. How ranking works
At a glance
- Ranked here
- 7
- Apps in Team Chat
- 17
- With a free plan
- 7 of 7
Top 7 open-source Team Chat apps
Ranked by organic score: upvotes and ratings from people. Payment never changes this order.How ranking works
Position 1
Open-source team chat for secure collaboration
Why it’s here
- Includes Team chat, Threaded conversations, Public API and 5 more
- Integrates with GitHub, GitLab, Jira and 1 more
- Open source
- Available on Web, macOS, Windows, Linux, iOS and Android
Position 2
Open-source communications platform
Why it’s here
- Includes Team chat, Threaded conversations, End-to-end encryption and 4 more
- Integrates with GitHub, GitLab, Jira and 1 more
- Open source
- Available on Web, macOS, Windows, Linux, iOS and Android
Position 3
Open-source team chat organized by topic
Why it’s here
- Includes Team chat, Threaded conversations, Public API and 2 more
- Integrates with GitHub, GitLab, Jira and 2 more
- Open source
- Available on Web, macOS, Windows, Linux, iOS and Android
Position 4
Why it’s here
- Includes Team chat, Threaded conversations, Public API and 3 more
- Open source
- Available on macOS, Windows and Android
Position 5
Free and fully featured chat app for XMPP
Why it’s here
- Includes Team chat, End-to-end encryption, Chat assistant and 1 more
- Open source
- Available on macOS, Windows and Linux
Position 6
Speak Freely
Why it’s here
- Includes Team chat, End-to-end encryption and Git hosting
- Open source
- Available on macOS, Windows, Linux, iOS and Android
Position 7
Secure, decentralized messaging on Matrix
Why it’s here
- Includes Team chat, Threaded conversations, End-to-end encryption and 2 more
- Open source
- Available on Web, macOS, Windows, Linux, iOS and Android