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Element vs Commet: catalog facts
Element	Commet
Freemium The client is free and open source under the AGPL 3.0. Element Matrix Services sells…	Free Free, funded by donations, with source code on GitHub.
Windows, macOS, Linux, Android, iOS, Web, Self-hosted	Windows, Linux, Android, Web
End-to-end encryption with cross-signed device verification Federated, so you can run your own server and still reach everyone	Several Matrix accounts logged in at the same time Voice channels and one-to-one calls
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	No macOS or iOS app listed Needs a Matrix account
Downloadable app	Downloadable app, Web application
Open source	Open source
License: AGPL-3.0	License not stated
Account needed	Account needed
Works offline	Needs internet
Official website Full listing and sources Checked September 21, 2026	Official website Full listing and sources Checked October 1, 2026

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