FreeOTP+ is a free and open-sourced 2FA authenticator for Android, developed by Haowen Ning. It is a fork of the original FreeOTP, with additional features to help backup, restore, and interoperate with other OTP authentication clients.

One of the most notable features of FreeOTP+ is the ability to back up and restore your data to Google Drive or other storage options. This ensures that your authentications are saved and can be easily retrieved in case of device loss or damage. The updated UI with a material design and dark theme support makes it easy to use and navigate. Additionally, FreeOTP+ supports Android 6.0 on-demand permission and backup, ensuring that all your saved authentications come back after reinstalling the app.

Overall, FreeOTP+ offers a reliable and convenient way to manage your two-factor authentications, with the added benefit of backup and restore options. The source code is available on GitHub, and the app is available for free on the Google Play Store.