Software · Security & privacy

Authenticator

Authenticator is a two-factor authentication program, available on Linux.

Completely free
Linux
Open source

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Geographic availability: No geographic restriction found in our sources; availability is not checked country by country.

Technical details

Pricing: Completely freeconfirmed by Flathub
License: GPL-3.0+ — Open source (copyleft)confirmed by Flathub
Open source: Yes
Commercial use: Yesconfirmed by Flathub, Official plan pages (pricing, licence, terms)
Account required: not documented
Credit card required: Noconfirmed by Flathub
Watermark: Not applicable
Ads: not documented
Platforms: LinuxEstablished by Linux: Flathub
Publisher: Bilal Elmoussaoui
Latest version: 4.6.2 (25 March 2025)
Latest activity: 21 March 2026
Source code: gitlab.gnome.org/World/Authenticator

At a glance

Authenticator is completely free: it is open source software, and every feature is available without paying or subscribing.

Its licence (GPL-3.0+) is a copyleft open source licence: you may use, study, modify and redistribute it, including commercially; modified versions must keep the same licence.

Strengths

Open source code
Commercial use allowed

About

Simple application for generating Two-Factor Authentication Codes. Features: Time-based/Counter-based/Steam methods support SHA-1/SHA-256/SHA-512 algorithms support QR code scanner using a camera or from a screenshot Lock the application with a password Beautiful UI GNOME Shell search provider Backup/Restore from/into known applications like FreeOTP+, Aegis (encrypted / plain-text), andOTP, Google Authenticator

Description from Flathub — AppStream (Flathub)

Sources and checks

Facts collected from Flathub (credit card, source code, publisher, licence, free status, platforms, commercial use, version) — 10 November 2026
Facts collected from Official plan pages (pricing, licence, terms) (commercial use) — 6 November 2026
Last technical check: 5 November 2026
Description from Flathub — AppStream (Flathub)

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