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Google Calendar vs Linwood Flow: catalog facts
Google Calendar	Linwood Flow
Free Free with a Google account.	Free Free and open source under the AGPL 3.0.
Web	Windows, Linux, Android, Web
Free to use Syncs across devices	You decide where your data is stored Manages events, groups, places and people in one app
Requires a Google account Data is stored on Google's servers	Developers state it is not ready for production use Nightly builds can be unstable
Web application, Hosted service	Downloadable app, Web application
Closed source	Open source
License not stated	License: AGPL-3.0
Account needed	Not stated if an account is needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked October 2, 2026

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