Microsoft Teams: The Best Open-Source Alternatives

Microsoft Teams combines chats, channels, and video meetings. The application supports group conversations, file sharing, and screen sharing in online meetings.

The directory lists Microsoft Teams in the «Team Chat» and «Video Conferencing» categories.

Here you can find open-source alternatives, and separately marked source-available alternatives, to «Microsoft Teams» (external link) in the categories «Team Chat» and «Video Conferencing».

In the Category «Team Chat»

Mattermost

Mattermost brings team communication together in channels and direct messages. File sharing, search and integrations connect conversations with other workflows.

  • Team Chat

Zulip

Zulip organizes team conversations into channels and topics. Searchable messages and direct messages support both real-time and asynchronous communication.

  • Team Chat

In the Category «Video Conferencing»

BigBlueButton

BigBlueButton combines video conferencing with presentations, shared whiteboards, polls, and breakout rooms for online teaching and training.

  • Video Conferencing

Jitsi Meet

Jitsi Meet enables video conferences in the browser with screen sharing, chat, raised hands, and polls. Mobile apps let people join on the go.

  • Video Conferencing