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Software · Security & privacy

Kerveros

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

  • Completely free
  • Linux
  • Open source

At a glance

Kerveros 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

Kerveros is a robust, cross-platform two-factor authentication (2FA) code generator that combines enterprise-grade security with user-friendly features. Generate time-based one-time passwords (TOTP) for all your online accounts while keeping your secrets encrypted and protected. Key Features: Master Password Protection: SHA-256 hashing with salting for enhanced security Encrypted Secret Storage: XOR encryption with initialization vectors TOTP Code Generation: RFC-compliant time-based one-time passwords Real-time Code Updates: Automatic refresh every 30 seconds with visual countdown timer QR Code Import: Drag and drop or file menu import of QR code images One-Click Copy: Instant clipboard copy with visual feedback Password Attempt Limiting: 5 attempts before factory reset option System Tray Integration: Minimize to tray with quick restore Export/Import Functionality: Full backup and restore capabilities Single Instance Enforcement: Prevents multiple app conflicts Kerveros is designed for security-conscious users who need a reliable, secure, and easy-to-use 2FA code generator with master password protection for all their online accounts including GitHub, Google, PayPal, Discord, and more.

Description from Flathub — AppStream (Flathub)

Sources and checks

  • Facts collected from Flathub (credit card, source code, publisher, licence, free status, platforms, commercial use, version) —
  • Last technical check: 9 November 2026
  • Description from Flathub — AppStream (Flathub)

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