Telegram
Cloud chat whose server side is closed, with accounts tied to phone numbers.
3 self-hosted replacements in this index, ranked by GitHub stars in the dataset.
Replacements
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
Element
Fully-featured Matrix client for Web, iOS & Android.
13,635 stars Active
30 Oct 2026 v1.12.33
Converse.js
XMPP chat client in your browser.
3,303 stars Active
28 Oct 2026 v14.0.1
