Open alternatives3
Open-source apps that replace Google Authenticator and Authy
Ente Auth is a free app that generates two-factor login codes on your phone or computer. It is for people who want a tool to replace Google Authenticator or Authy, with the codes kept end-to-end encrypted.
Aegis Authenticator is a free, open source app for Android that generates login codes for two-step sign-in. It is for people who want a secure alternative to Google Authenticator and Authy, with encrypted backups.
2FAS is a phone app that creates one-time login codes to add a second layer of security to your online accounts. It is for anyone who wants to use two-step sign-in with services that support TOTP or HOTP codes.
What's missing
What people still miss here, and wish existed. Upvote what matters to you.
Before you build
Planning something for two-factor codes? See what exists first, so you can reuse parts or explain what's different. Paste this into any AI assistant:
Fix the list itself
A project or closed app missing from this list, or a mistake on it? These open a short form on GitHub, and a mod reviews it. To say what a project can't do, use What's missing.
About this page
Replaces fully means it does the main job of these apps; Replaces partly means it covers some of it.
Licenses: every project here uses an open-source license (what each one means). Open core means some parts are paid or under another license.
GitHub stars are shown for reference. They measure popularity, not whether it replaces anything.
Verified means r/TrueOpenSource mods checked it: open-source license, maintained, and it really does the job.
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