Microsoft Teams alternatives · Team Chat
Open-source alternatives to Microsoft Teams
Microsoft Teams is not described as open source on its own site. 7 of the 33 other team communication apps in this directory are open source, according to their own sites.
Microsoft Teams has a free plan. Paid plans start at $4.00 per user / month, paid yearly. All of them are free or have a free plan.
7 tools · Listings checked up to Oct 6, 2026 · Where the facts come from
How each one differs from Microsoft Teams
- Free plan
Element
End-to-end encrypted chat and calls on the Matrix standard
- Only Element lists a Linux app.
- Element is open source, self-hostable and end-to-end encrypted, according to its own site.
- Microsoft Teams also covers transcription, noise cancellation and whiteboard.
- Free plan · from €7.45/mo
Wire
End-to-end encrypted messaging and calls for organizations
- Wire starts at €7.45 per person / month, paid annually. Microsoft Teams starts at $4.00 per user / month, paid yearly.
- Only Wire lists a Linux app.
- Wire is open source, self-hostable and end-to-end encrypted, according to its own site.
- Microsoft Teams also covers transcription, noise cancellation and whiteboard.
- Free plan
Rocket.Chat
Open-source, self-managed chat for security-focused teams
- Only Rocket.Chat lists a Linux app.
- Rocket.Chat is open source, self-hostable and end-to-end encrypted, according to its own site.
- Microsoft Teams also covers transcription, noise cancellation, whiteboard and video calls.
- Free plan · from $3.50/mo
Zulip
Open-source team chat that organizes channels by topic
- Zulip starts at $3.50 per user / month self-hosted (billed monthly); Cloud from $6.67 billed annually. Microsoft Teams starts at $4.00 per user / month, paid yearly.
- Only Zulip lists a Linux app.
- Zulip is open source and self-hostable, according to its own site.
- Microsoft Teams also covers transcription, noise cancellation, whiteboard and video calls.
- Free
ONCE Campfire
Self-hosted group chat from 37signals, free and open source
- ONCE Campfire is free. Microsoft Teams starts at $4.00 per user / month, paid yearly.
- Only Microsoft Teams lists macOS, Windows, iOS and Android apps.
- ONCE Campfire is open source and self-hostable, according to its own site.
- Microsoft Teams also covers transcription, noise cancellation, whiteboard and video calls.
- Free plan
Mattermost
Self-hosted team messaging with playbooks, calls and boards
- Only Mattermost lists a Linux app.
- Mattermost is open source and self-hostable, according to its own site.
- Mattermost also covers kanban boards, workflow automation and AI agents.
- Microsoft Teams also covers transcription, noise cancellation, whiteboard, video calls and file sharing.
- Free
Jitsi Meet
Free, open-source video meetings you can self-host
- Jitsi Meet is free. Microsoft Teams starts at $4.00 per user / month, paid yearly.
- Only Jitsi Meet lists a Linux app.
- Jitsi Meet is open source, self-hostable and end-to-end encrypted, according to its own site.
- Microsoft Teams also covers transcription, noise cancellation, whiteboard, team chat and file sharing.
Common questions
Is there an open-source alternative to Microsoft Teams?
Yes. Element, Wire, Rocket.Chat, Zulip, ONCE Campfire, Mattermost and Jitsi Meet are open source, according to their own sites.
Is Microsoft Teams open source?
Microsoft Teams is not described as open source on its own site. The listing was checked on Oct 5, 2026 against the pages it cites.
When was this checked?
Each listing shows its own date. On this page they run from Oct 5, 2026 to Oct 6, 2026. Vendors change prices and plans without notice, so confirm on their site before you buy.
This page is built from the listings. A tool is here because its listing says so, and the order is how close each is to Microsoft Teams: the alternatives its listing names first, then the tools that share the most features with it.