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2FAuth vs 2FAS: catalog facts
2FAuth	2FAS
Free Free and open source under the AGPL-3.0 licence.	Free Free and open source. Some components are source-available.
Web, Self-hosted	Android, iOS, Browser extension
Codes available from any device with a browser Easy backup and restore of a standalone database	Browser extension approves codes on the phone instead of typing them Encrypted backups to your own iCloud or Google Drive account
Requires running your own server Fully localised only in English and French	Mobile-first; there is no standalone desktop app Push approval needs the browser extension installed on each machine
Self-hosted	Downloadable app, Browser extension
Open source	Open source
License: AGPL-3.0	License not stated
Not stated if an account is 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 October 2, 2026	Official website Full listing and sources Checked September 22, 2026

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