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

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