Life & fun · alternatives · 2026

24 alternatives to Duo

Easy to administer two-factor authentication.

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Duo launched in 2016; newer entries below may have overtaken it.

1. 1
   Google Duo▲688

   One-to-one video calling. Google's FaceTime competitor.

   2016 · accounts.google.com · its alternatives →

2. 2
   Allo and Duo▲375

   Google’s new smart messaging and video calling apps

   2016 · blog.google · its alternatives →

3. 3
   Saaspass▲9

   Two factor authentication made easy

   2015 · saaspass.com · its alternatives →

4. 4
   Rapid 2FA▲91

   A painless way to add two-factor authentication to your site

   2017 · rapid2fa.com · its alternatives →

5. 5TE
   The easiest 2-factor auth▲27

   2014 · developer.mepin.com · its alternatives →

6. 6
   Authy▲177

   Dead simple two-factor authentication optimized for devs

   2014 · authy.com · its alternatives →

7. 7
   Duo▲412

   Personal AI computer for your home. Like JARVIS. 🗣.

   2017 · duo.computer · its alternatives →

8. 8
   AuthMonster▲72

   The 2FA app you actually enjoy using

   Jul 2026 · authmonster.app · its alternatives →

9. 9
   Two-factor authentication for Apple ID▲96

   To ensure you're the only person who can access your account

   2016 · support.apple.com · its alternatives →

10. 10
    2FAS▲69

    The fastest-growing, private, and secure 2FA app

    2022 · 2fas.com · its alternatives →

11. 11
    Two Factor Auth (2FA)▲136

    List of websites and whether or not they support 2FA

    2016 · 2fa.directory · its alternatives →

12. 12
    Authn8▲7

    Authenticator for secure 2FA sharing

    Oct 2025 · authn8.com · its alternatives →

13. 13
    Authenticator▲87

    Two-factor authentication in your browser itself

    2021 · authenticator.cc · its alternatives →

14. 14
    One Account▲176

    1 click sign-ups

    2021 · oneaccount.app · its alternatives →

15. 15
    Authenticator by 2Stable▲66

    Secure, encrypted and fast two-factor authentication app

    2021 · authenticator.2stable.com · its alternatives →

16. 16
    Authenticator App by 2Stable▲100

    Secure 2FA app for iPhone, iPad, iPod, Apple Watch & Mac

    2023 · authenticator.2stable.com · its alternatives →

17. 17
    YoAuth▲92

    Two-step authentication using Yo

    2014 · yoauth.herokuapp.com · its alternatives →

18. 18
    Bulwark▲117

    Beautifully simple 2FA

    2021 · apps.apple.com · its alternatives →

19. 19
    Instant 2FA▲139

    Add two-factor auth to any site in minutes

    2016 · instant2fa.com · its alternatives →

20. 20
    Duomov▲79

    Make split-screen, synchronized videos with nearby friends

    2017 · duomov.com · its alternatives →

21. 21
    Pair2FA▲65

    Secure 2FA sharing for teams

    30d ago · pair2fa.com · its alternatives →

22. 22
    Authmoji▲123

    Two-factor authentication with flair

    2021 · authmoji.com · its alternatives →

23. 23
    Duo▲72

    Dual-paned web browser for responsive web design.

    2013 · apps.apple.com · its alternatives →

24. 24
    Authenticator°▲85

    Online account protection with multi-factor authentication

    2023 · apps.apple.com · its alternatives →

Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →