Proton launches a free, open-source 2FA app with cross-platform sync – and you can install on Ubuntu (no more scrabbling for your phone to get a code).

https://www.omgubuntu.co.uk/2025/07/proton-authenticator-2fa-app-linux-desktop

#proton #2fa #opensource

Proton’s New 2FA Authenticator App Supports Ubuntu

Proton launches a free, open-source 2FA app with cross-platform sync that you can install on Ubuntu. It offers a privacy-focused alternative to apps like Google Authenticator.

OMG! Ubuntu

@omgubuntu I don't scramble for my phone to get a 2FA code because I use Authenticator.

https://flathub.org/apps/com.belmoussaoui.Authenticator

Install Authenticator on Linux | Flathub

Generate two-factor codes

Flathub - Apps for Linux
@desikn Yup, I mention Authenticator in the article (having written about it before), but as I also note in the article, Proton's pitch is that it runs on mobile and desktop and syncs between them, so your codes are available on both.
@omgubuntu
Keeping the second factor 2FA on a different device would enhance the security.
@omgubuntu only when you have a paid account. Without you cant use the mail app and without it will not sinc. I found out. It works on Android, not on a laptop because you can't login.
@omgubuntu
There's also the Authenticator RS application, which also works very well under Linux (tested, in Arch repo).
https://apps.gnome.org/Authenticator/
Authenticator – Apps for GNOME

Generate two-factor codes – Simple application for generating Two-Factor Authentication Codes. Features: Time-based/Counter-based/Steam methods supportSHA-1/SHA-256/SHA-512 algorithms supportQR code scanner using a camera or f...