iOS client for Proton Authenticator
Source code for 2FAS Auth iOS app
A native, lightweight and secure one-time-password (OTP) client
A free, secure and open source app for Android
Official Android implementation of a modern two-factor authentication
Source code for 2FAS Auth Android app
Source code for 2FAS Auth Browser Extension
One Time Password Authentication package, compatible with Google Auth
Two-Factor Authentication (2FA) client for Android + Wear OS
The most comprehensive authentication library for TypeScript
Open source two-factor authentication for Android
Two-factor authentication for Node.js