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OTPClient

Free#85 of 111 in Authenticator Apps

OTPClient: A capable open-source Linux authenticator for users who want local control and desktop integration. Ranked #85 of 111 in Authenticator Apps by our editors (3.0/10); pricing: Open source; best for security-focused Linux desktop users.

3.0/10Editor score

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OTPClient3.0 Visit OTPClient

At a glance

Editor score
3.0 / 10
Pricing
Open source
Best for
Security-focused Linux desktop users
Paid from
Free
Facts checked
22 Sep 2026

Where it wins
- AES-256-GCM databases with Argon2id key derivation
- QR scanning from images, webcam, or clipboard
- CLI output plus GNOME Shell and KDE KRunner search integration
Where it doesn't
- Linux desktop coverage only
- No synchronization between devices
- No team administration features

Our verdict on OTPClient

OTPClient is an open-source Linux desktop authenticator for managing TOTP and HOTP tokens. Its GTK4/libadwaita interface supports configurable OTP digits, periods, and hashing algorithms, while token grouping and cross-database search help organize larger collections. The application also offers optional system-tray operation, start-at-login, auto-lock, and configurable clipboard wiping. It suits security-focused Linux desktop users who prefer local token management over a cloud-connected workflow.

The local security model is a central strength. OTPClient stores tokens in databases protected with AES-256-GCM and uses Argon2id for key derivation. Encrypted and plain backup import/export are available, and the application can work with OS Secret Service. QR codes can be scanned from images, a webcam, or the clipboard, reducing manual entry during setup. The command-line companion adds table, JSON, and CSV output, which fits users who want terminal access or script-friendly token views.

OTPClient also connects with the Linux desktop environment through GNOME Shell and KDE Plasma KRunner search integration. It supports importing backup formats associated with Aegis, Authenticator Pro, 2FAS, FreeOTP+, and Google Authenticator. Linux distribution is documented through Flatpak and distro repositories, while the product remains narrowly focused on desktop use. Users who need a local-first authenticator with strong storage controls, flexible QR import, and CLI access should consider it. Those who need synchronization across devices or team administration should choose a different authenticator.

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

OTPClient pricing

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

See plans on github.com

OTPClient fact sheet

Free plan	Not verified
Paid from	Free
Code type	Totp and hotp
Push approvals	Not verified
Encrypted backup	Yes
Multi-device sync	Not verified
Team administration	Not verified
Supported platforms	Linux desktop
Deployment	Desktop
Platforms	Linux
Support	Community, Docs
Built for	Solo, Small business (editorial estimate)
Integrations	8 integrations: GNOME Shell, KDE Plasma KRunner, OS Secret Service, Aegis, Authenticator Pro, 2FAS …
Pricing	Open source
Website	github.com
Facts checked	22 Sep 2026

OTPClient integrations

OTPClient lists 8 integrations on its own site.

GNOME Shell
KDE Plasma KRunner
OS Secret Service
Aegis
Authenticator Pro
2FAS
FreeOTP+
Google Authenticator

Alternatives to OTPClient

See all OTPClient alternatives →

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Featured on iTechGuides

OTPClient 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

Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.

Last updated 7 Oct 2026 · How we research and update