Dev tools · alternatives · 2026

24 alternatives to Replace CAPTCHAs with WebAuthn passkeys for bot prevention

I built Nocaptcha after getting frustrated with traditional CAPTCHAs both as a user and developer. WebAuthn passkeys offered a promising alternative that's both more secure and user-friendly. What makes Nocaptcha different: - Uses WebAuthn standard instead of puzzle-solving - No need for users to remember passwords or solve puzzles - Open source Current limitation: Working with W3C WebAuthn Community Group on true passkey disposal for this use case. Looking for feedback particularly on: 1. Integration experience 2. User experience compared to traditional CAPTCHAs

Nocaptcha is an open-source bot prevention tool that replaces traditional CAPTCHAs with WebAuthn passkeys. Instead of solving puzzles, users authenticate using the WebAuthn standard, eliminating the need to remember… Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Replace CAPTCHAs with WebAuthn passkeys for bot prevention launched in 2024; newer entries below may have overtaken it.

1. 1
   Cap▲428

   A lightweight, modern open-source captcha

   2025 · capjs.js.org · its alternatives →

2. 2
   CodeCaptcha - Hide web links behind coding challenges▲163

   Hello HN, I made this silly project over the long weekend. It’s pretty basic right now and the captchas are very easy. I plan to add captcha difficulty levels for link creators soon.

   2022 · codecaptcha.io · its alternatives →

3. 3
   WeHateCaptchas▲208

   Keep the bots out without annoying your users

   2019 · its alternatives →

4. 4
   ZENCAPTCHA▲115

   Privacy-first bot & spam defense, GDPR compliant CAPTCHA

   2023 · zencaptcha.com · its alternatives →

5. 5WW
   wehatecaptchas – we’ll keep the bots out without annoying your users▲136

   2019 · wehatecaptchas.com · its alternatives →

6. 6
   DOOM Captcha▲512

   Captchas don't have to be boring

   2021 · vivirenremoto.github.io · its alternatives →

7. 7RC
   Replace CAPTCHA with Proof-of-Work▲89

   2014 · hashcash.io · its alternatives →

8. 8
   Procaptcha▲3

   An open-source captcha alternative to stop bots and fraud

   2024 · prosopo.io · its alternatives →

9. 9
   reCAPTCHA v3▲222

   The next generation reCAPTCHA

   2018 · developers.google.com · its alternatives →

10. 10
    Procaptcha – Open-source, privacy preserving and frictionless CAPTCHA▲8

    We built Procaptcha to make sure there's an actually good alternative to Google's ReCAPTCHA that's not a complete nightmare for the end user. Crucially we're not just a giant ad network like almost all CAPTCHA providers [1]. Like with other CAPTCHA providers it's simple to set up, you just change a couple of tags [2]. We've got a few different CAPTCHA types at the moment, all running on a distributed network of nodes with no user tracking. [1] https://prosopo.io/articles/stop-giving-your-website-data-aw... [2] https://github.com/prosopo/captcha

    2024 · prosopo.io · its alternatives →

11. 11
    Uruky (EU-based Kagi alternative) now has Image Search and URL Rewrites▲236

    You can get a 2h free trial by solving a proof-of-work captcha when topping up your account for the first time. If you'd like to learn more, an independent interview was posted a couple of weeks ago [1], and the FAQ [2] has a lot of information as well. For the source code sharing, we've talked with lawyers and are inclined to no longer require the NDA/NCC for privacy reasons shared with us before (signing requires identification), but instead use a source-available permissive license that doesn't allow competition, like PolyForm Shield [3] (we do still have about 6 months before…

    Jun 2026 · uruky.com · its alternatives →

12. 12
    Passkeyd▲160

    Passkey auth, minimalistic and self hosted

    2024 · its alternatives →

13. 13
    Google Invisible reCAPTCHA▲428

    Protects your website from spam and abuse

    2017 · cloud.google.com · its alternatives →

14. 14
    NoCodeAPI▲552

    Build third-party application APIs with NoCode

    2020 · nocodeapi.com · its alternatives →

15. 15
    Passage by 1Password▲236

    Frictionless security: auth & user management with passkeys

    2023 · 1password.com · its alternatives →

16. 16TT
    Tricking the user to access history using CSS and captchas▲140

    2014 · frantzmiccoli.github.io · its alternatives →

17. 17
    Lemin CAPTCHA▲77

    Hassle-free CAPTCHA. Stop Bots, Stay Secure.

    2023 · dashboard.leminnow.com · its alternatives →

18. 18
    Passkeys by Hanko▲320

    Quickly integrate passkeys into any app

    2024 · hanko.io · its alternatives →

19. 19
    powCAPTCHA▲10

    Next-gen captcha | anti bot & spam filter

    2025 · powcaptcha.com · its alternatives →

20. 20FA
    FriendlyCaptcha – a privacy friendly proof-of-work based CAPTCHA▲9

    Friendly Captcha is a privacy-compliant, accessible alternative to traditional CAPTCHAs. It protects your websites and apps from bots and spam.

    2020 · friendlycaptcha.com · its alternatives →

21. 21
    noCaptcha: Automatic CAPTCHA Solver▲5

    Fast and cheap hCaptcha, reCaptcha, OCR Captcha solving

    2023 · nocaptchaai.com · its alternatives →

22. 22
    adCAPTCHA▲148

    Secure your site, elevate your brand, boost ad revenue

    2024 · adcaptcha.com · its alternatives →

23. 23
    Humans Not Invited▲237

    CAPTCHA that filters out humans and only lets programs pass

    2018 · humansnotinvited.com · its alternatives →

24. 24
    No CAPTCHA reCAPTCHA▲181

    Google's update to CAPTCHA just asks if you're robot

    2014 · cloud.google.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 →