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QuaternionElement
Free

Free and open source.

 Freemium

The client is free and open source under the AGPL 3.0. Element Matrix Services sells…

Windows, macOS, Linux Windows, macOS, Linux, Android, iOS, Web, Self-hosted
  • Native Qt interface instead of a web wrapper
  • Works with any Matrix homeserver
  • End-to-end encryption with cross-signed device verification
  • Federated, so you can run your own server and still reach everyone
  • Smaller project than the major Matrix clients such as Element
  • Development pace is slower than larger clients
  • Encryption key management confuses people the first time they log in on a new device
  • Heavy on memory for a chat app, and slow with many large rooms
Downloadable app Downloadable app
Open source Open source
License not stated License: AGPL-3.0
Account needed Account needed
Needs internet Works offline

Checked October 2, 2026

Checked September 21, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.