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Quaternion vs Nheko: catalog facts
Quaternion	Nheko
Free Free and open source.	Free The open-source software is available without a license fee. Hosting, hardware and…
Windows, macOS, Linux	Windows, macOS, Linux
Native Qt interface instead of a web wrapper Works with any Matrix homeserver	Supports encrypted conversations and platform-dependent calling features.
Smaller project than the major Matrix clients such as Element Development pace is slower than larger clients	The project says its encryption implementation has not been audited.
Downloadable app	Downloadable app
Open source	Open source
License not stated	License: GPL-3.0
Account needed	Not stated if an account is needed
Needs internet	Not stated if it works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked September 22, 2026

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