Disclaimer: I am in no way affiliated with Aegis Authenticator, and I have no monetary incentive in sharing it. I just found this a week ago on Reddit and after using it for a week with having no bad experience(so far), I just decided to share this here for the daytraders who needs to leave funds on exchanges on the daily.
Advantages over Google Auth:
- Slick, modern UI
- Open source
- Local backup feature(.json file)
- AES-256 Encryption, password lock
Disadvantages:
- Currently Android only. If you're on iOS, probably lookup FreeOTP(also open source)
Website: https://beem.dev/
GitHub repo: https://github.com/beemdevelopment/Aegis
Google PlayStore: http://play.google.com/store/apps/details?id=com.beemdevelopment.aegis
F-Droid: https://f-droid.org/en/packages/com.beemdevelopment.aegis
Why not use Authy? If having your 2FA backups stored on a company's servers is fine with you, then by all means go with Authy. But if you prefer storing your 2FA backups yourself, through an encrypted flashdrive and such, then try out Aegis.