OTP Harbor

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OTP Harbor is a free, open-source, local-first two-factor authentication (2FA) app for Windows, Linux and Android.

Desktop light and dark theme.

Install:

Either MS Store

or

winget install --id 9P31KH5L924P --source msstore

Cost / License

Free
Open Source (GPL-3.0)

Origin

Germany
EU

Since

New

Updated

Updated Nov 2026

Platforms

Windows
Linux
Android

main window

Right-click for options

+5

Possibility t scan totp account account(s) heavily dependend on desktop camera quality and light conditions

OTP Harbor alternatives

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Properties

Privacy focused

Features

Encrypted Backup
AES-256 Encryption
Time-based One-time Password
No Tracking
Ad-free
Two-factor Authentication
Dark Mode
Works Offline
Biometric Authentication
Offline

Tags

Highlights All activities

Recent activities

Legends liked OTP Harbor
about 1 hour ago
Legends added OTP Harbor
about 1 hour ago
Legends added OTP Harbor as alternative to 2FA Authenticator (2FAS), 2fast, 2FAS Pass, Aegis Authenticator and 6 more
about 3 hours ago

OTP Harbor information

Developed by
Legends
Licensing
Open Source (GPL-3.0) and Free product.
Written in
C#
Alternatives
10 alternatives listed
Badge
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Supported Languages
- English
- Spanish
- German
- French

AlternativeTo Category

Security & Privacy

GitHub repository

2 Stars
0 Forks
1 Open Issues
Updated Nov 7, 2026

Popular alternatives

OTP Harbor was added to AlternativeTo by Legends on Nov 10, 2026 and this page was last updated Nov 10, 2026.

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What is OTP Harbor?

OTP Harbor is a free, open-source, local-first two-factor authentication (2FA) app for Windows, Linux and Android.

Generate time-based one-time passwords (TOTP) without creating a cloud account or relying on an internet connection.

Key features:

Encrypted local vault using AES-256-GCM and Argon2id
Offline TOTP code generation
QR code scanning and manual account setup
Import from Google Authenticator, Aegis and 2FAS
Encrypted backup and restore between supported platforms
Windows Hello and Android biometric or device-based quick unlock
Light and dark themes
Automatic clipboard clearing and session locking
Open-source code under the GPLv3 license

OTP Harbor is designed for users who want control over their authentication secrets without mandatory cloud synchronization or a subscription.