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Synology Chat vs Nextcloud Talk: catalog facts
Synology Chat	Nextcloud Talk
Free License-free, but it requires a Synology NAS to host the server.	Free Free and open source as part of a Nextcloud server you host.
Windows, macOS, Linux, Android, iOS, Web, Self-hosted	Android, Web, Self-hosted
Messages stay on your own NAS Optional end-to-end encryption for conversations or channels	Runs on your own server Chat, calls and webinars in one app
Only runs on Synology NAS hardware Closed source	Needs a Nextcloud server to use Setting up reliable video calls takes extra server work
Downloadable app, Web application, Self-hosted	Downloadable app, Web application, Self-hosted
Closed source	Open source
License not stated	License not stated
Account needed	Account needed
Not stated if it works offline	Needs internet
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked September 23, 2026

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