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Floccus vs BookMacster: catalog facts
Floccus	BookMacster
Free Free and open source, supported by donations.	Paid Commercial app from Sheep Systems; check the site for current pricing.
Android, iOS, Browser extension	macOS
Syncs across different browsers, not just one vendor's Works with self-hosted Nextcloud, WebDAV or Git as well as Google Drive and Dropbox	Tagging and alphabetizing for browser bookmarks Works with Safari bookmarks
You need to provide the storage backend yourself Supported features vary by backend	macOS only Requires macOS 11 or later for current versions
Downloadable app, Browser extension	Downloadable app
Open source	Closed source
License not stated	License not stated
No 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.