A2

a2fa

a2fa is a command line tool for generating and validating one-time passwords (OTP) supporting OATH algorithms such as TOTP and HOTP. It aims to replace phone-based 2FA apps by providing easy authentication without network connection or phone.
Latest: 0.16.5
Last checked: Jun 9, 2026 12:10am
Rank: 3856/15140
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Overview

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License: Apache License 2.0Installer: brew, paru, yay, apt, wingetWinget: Available

Version & Lifecycle

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Current: 0.16.5 Predicted EOL: 2025-12-31 Avg cadence: Every 9 days

Top Contributors

Top sitewide contributors:

  1. Anbarasan
  2. nico_k
  3. Bob
  4. Vigneshwaran

Community Notes

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Release Notes & Updates

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Also known as

Other names people use for this app — helps search and matching.

a2facsyezheng a2fa

Packaging Notes

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Available via Homebrew, AUR, apt, winget (Windows)

Notes

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Latest known version is 0.16.5. It syncs with Google Authenticator and Microsoft Authenticator.