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Quaternion vs NeoChat: catalog facts
Quaternion	NeoChat
Free Free and open source.	Free Free and open source, developed by the KDE community.
Windows, macOS, Linux	Windows, Linux
Native Qt interface instead of a web wrapper Works with any Matrix homeserver	Fits into the KDE Plasma desktop Supports Spaces, polls, stickers and location sharing
Smaller project than the major Matrix clients such as Element Development pace is slower than larger clients	No voice or video calls No threads and incomplete end-to-end encryption support
Downloadable app	Downloadable app
Open source	Open source
License not stated	License not stated
Account needed	Account needed
Needs internet	Needs internet
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked September 23, 2026

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