Microsoft Teams
Chat and meetings bundled with Microsoft 365, administered through Microsoft's tenant system.
4 self-hosted replacements in this index, ranked by GitHub stars in the dataset.
Replacements
Rocket.Chat
Communications platform that puts data protection first.
46,353 stars Active
31 Oct 2026 9.0.0-rc.3
Mattermost
Platform for secure collaboration across the entire software development lifecycle, can be integrated with Gitlab.
39,486 stars Active
30 Oct 2026 v11.7.15-rc1
Jitsi Meet
WebRTC application that uses Jitsi Videobridge to provide high quality, scalable video conferences.
30,170 stars Active
30 Oct 2026 stable/jitsi-meet_11248
Element
Fully-featured Matrix client for Web, iOS & Android.
13,635 stars Active
30 Oct 2026 v1.12.33
