Ente Auth
Description: An open-source (AGPL-3.0) authenticator for TOTP codes with end-to-end encrypted cloud backups, synced across mobile, desktop and web. Codes can be exported and imported in bulk, and it also works offline without an account, so the second factor is not tied to one vendor.
Subcategory: Two-Factor Authentication
License: open-source
URL: Ente Auth