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OTPClient vs 2FAuth: catalog facts
OTPClient	2FAuth
Free Free and open source under the GPL-3.0 license.	Free Free and open source under the AGPL-3.0 licence.
Linux, Command line	Web, Self-hosted
Multiple encrypted token databases Supports TOTP, HOTP and Steam Guard codes	Codes available from any device with a browser Easy backup and restore of a standalone database
Desktop Linux only, no mobile app Handles one-time codes only, not passwords	Requires running your own server Fully localised only in English and French
Downloadable app	Self-hosted
Open source	Open source
License: GPL-3.0	License: AGPL-3.0
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 24, 2026	Official website Full listing and sources Checked October 2, 2026

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