Open Source Microsoft Teams Alternatives

A curated collection of the 4 best open source alternatives to Microsoft Teams.

Mattermost stands out as the best open source alternative to Microsoft Teams. If it doesn’t meet your needs, don’t worry, — we’ve put together a ranked list of other open source Microsoft Teams alternatives to help you find the right fit. Other interesting open source alternatives to Microsoft Teams are: Rocket.Chat, Zulip and Element.

Microsoft Teams alternatives are mainly Communication but may also be Messaging or Task Management. Browse these if you want a narrower list of alternatives or looking for a specific functionality of Microsoft Teams.

A secure collaboration platform designed for mission-critical operations. It offers customizable tools for team communication, task management, and workflow automation

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An open-source communication platform designed for secure and customizable team collaboration.

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An organized team chat app for distributed teams of all sizes.

Screenshot of Zulip website
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An open source Matrix-based end-to-end encrypted messenger and secure collaboration app.

Screenshot of Element website
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