Alternatives to Microsoft Teams
Chat and meetings integrated with Microsoft 365
A collaboration app that combines chat, meetings, and calling in the Microsoft 365 ecosystem.
Include proprietary
Order
Element
Matrix client for secure room-based messaging
collaborationmatrix
Updated 2/20/2026Apache-2.0
Matrix (Synapse)
Matrix homeserver for hosting federated chat
collaborationmatrix
Updated 2/20/2026Apache-2.0
Nextcloud Talk
Chat and video calls inside Nextcloud
collaborationvideo-calls
Updated 2/20/2026AGPL-3.0