1.beemdevelopment / AegisA free, secure and open source app for Android to manage your 2-step verification tokens.otptotphotpandroidsecureencryption+3 moreJavaGPL-3.013K total614 forks+680 starsfrom 12,764 · score 6.52
2.BastiaanJansen / otp-javaA small and easy-to-use one-time password generator library for Java implementing RFC 4226 (HOTP) and RFC 6238 (TOTP).javaotptotphotp2fatwo-factor-authentication+4 moreJavaMIT245 total41 forks+5 starsfrom 240 · score 1.79