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OpenAuthenticator

Free#108 of 111 in Authenticator Apps

OpenAuthenticator: A focused free desktop TOTP tool for local code generation. Ranked #108 of 111 in Authenticator Apps by our editors (3.0/10); pricing: Open source; best for desktop users wanting a minimal open-source OTP tool.

3.0/10Editor score

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At a glance

Editor score
3.0 / 10
Pricing
Open source
Best for
Desktop users wanting a minimal open-source OTP tool
Paid from
Free
Founded
2021
Facts checked
21 Sep 2026

Where it wins
- Free open-source desktop software for Windows, macOS, and Linux
- Generates and automatically refreshes TOTP codes
- Copies codes to the clipboard and supports local token storage
Where it doesn't
- No encryption for stored authenticator data
- No backups or synchronization across devices
- Supports TOTP only, not HOTP or broader platform coverage

Our verdict on OpenAuthenticator

OpenAuthenticator is a free, open-source desktop authenticator for individual users who want a straightforward way to generate time-based one-time passwords. It runs on Windows, macOS, and Linux, with core tools for adding and deleting authenticator tokens, generating TOTP codes, copying them to the clipboard, and automatically refreshing them. Service favicons provide a small visual aid for distinguishing accounts, while local token storage keeps the app focused on desktop use rather than account synchronization.

Its main strength is a narrow, practical feature set. The Electron-based application provides the essentials for managing TOTP tokens without extending into password management or broader authentication workflows. Cross-platform desktop packaging makes it suitable for users who move between the three supported desktop operating systems, while open-source distribution gives technically minded users a transparent software model. Those priorities make it a reasonable fit for personal accounts where codes are accessed from one desktop environment and a minimal interface matters more than ecosystem breadth.

The trade-off is limited protection and portability for stored tokens. OpenAuthenticator does not provide encryption, backups, or synchronization, so it is a weaker choice for users who need recovery options or access across multiple devices. It also supports TOTP rather than HOTP and does not offer broader platform coverage beyond Windows, macOS, and Linux. Choose it for simple local desktop TOTP generation; choose an alternative if encrypted storage, device syncing, backup workflows, HOTP, or mobile access are requirements.

Your product? Our editors can test OpenAuthenticator in depth and publish a review, labelled as paid · from $149/mo →

OpenAuthenticator pricing

Plans Open sourceFree Free to use — no paid tier required for the core job.

See plans on github.com

OpenAuthenticator fact sheet

Free plan	Not verified
Paid from	Free
Code type	Totp
Push approvals	Not verified
Encrypted backup	Not verified
Multi-device sync	Not verified
Team administration	Not verified
Supported platforms	windows, macos, linux
Deployment	Desktop
Platforms	Windows, macOS, Linux
Built for	Solo, Small business (editorial estimate)
Pricing	Open source
Website	github.com
Facts checked	21 Sep 2026

Alternatives to OpenAuthenticator

See all OpenAuthenticator alternatives →

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Featured on iTechGuides

OpenAuthenticator is listed in our Authenticator Apps directory. Add the badge to your site — it links back to this page.

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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

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Last updated 7 Oct 2026 · How we research and update