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

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