Cap Captcha Alternatives

Cap Captcha is described as 'Lightweight, modern open-source CAPTCHA alternative designed using SHA-256 proof-of-work' and is a Anti-Spam tool in the security & privacy category. There are more than 25 alternatives to Cap Captcha for a variety of platforms, including Web-based, Self-Hosted, SaaS, Wordpress and JavaScript apps. The best Cap Captcha alternative is Anubis. It's not free, so if you're looking for a free alternative, you could try Anubis or reCAPTCHA. Other great apps like Cap Captcha are Private Captcha, ALTCHA, hCaptcha and Cloudflare Turnstile.

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Alternatives list

  1. UniqPin icon
     3 likes
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    UniqPin is a free for non-commercial use service which destiny improve ability of interfaces detect a human or a computer operate with it.

    Cost / License

    • Free Personal
    • Proprietary

    Application type

    Platforms

    • Self-Hosted
    • JavaScript
    • PHP
     
  2. Mollom icon
     2 likes
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    Mollom is a freemium web service to get rid of spam, unwanted content and fake users on your Drupal, Wordpress and Joomla site or blog.

    Cost / License

    • Freemium
    • Proprietary

    Alerts

    • Discontinued

    Platforms

    • Online
     
  3. Sblam! icon
     3 likes
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    Open-source implementation of server-side spam filtering of blog comments and forum posts.

    Cost / License

    • Free
    • Proprietary

    Application type

    Platforms

    • Linux
    • Online
     
    • Sblam! is the most popular Linux alternative to Cap Captcha.

    • Sblam! is Free and ProprietaryCap Captcha is Free and Open Source
  4. InputGuard icon
     1 like
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    InputGuard is the privacy friendly alternative to reCAPTCHA or other captcha tools.

    Cost / License

    • Freemium (Subscription)
    • Proprietary

    Platforms

    • Online
    • Self-Hosted
    • Software as a Service (SaaS)
     
  5. MTcaptcha icon
     3 likes
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    MTCaptcha is a smart captcha service that prioritizes privacy and accessibility. It offers an adaptive invisible noCaptcha that is easy for humans but hard for bots, making verification frictionless. MTCaptcha is GDPR and WCAG compliant, ensuring that your data is never sold or...

    Cost / License

    • Freemium (Pay once or Subscription)
    • Proprietary

    Platforms

    • Software as a Service (SaaS)
     
  6. Captoshi icon
     1 like
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    Captoshi is a Web3 startup redefining online earning through interactive math challenges.

    Cost / License

    • Free
    • Proprietary

    Platforms

    • Online
     
  7. Copy a direct link to this comment to your clipboard

    GeeTest protects your websites, mobile apps and APIs from bad bot attacks with zero user friction. Its self-learning defense model based on Graph Convolutional Networks and massive volumes of biometric data collected in the past 7 years allows GeeTest to identify and mitigate...

    Cost / License

    • Subscription
    • Proprietary

    Application type

    Platforms

    • Software as a Service (SaaS)
     
    • GeeTest CAPTCHA is the most popular commercial alternative to Cap Captcha.

    • GeeTest CAPTCHA is Paid and ProprietaryCap Captcha is Free and Open Source
  8. Copy a direct link to this comment to your clipboard

    The Arkose Labs platform undermines the economic drivers behind fraud until perpetrators are compelled to abandon attacks. Real-time risk classification of traffic with interactive enforcement challenges, the solution defeats automated attacks...

    Cost / License

    • Subscription
    • Proprietary

    Platforms

    • Software as a Service (SaaS)
     
  9. Copy a direct link to this comment to your clipboard

    Hide your web link behind a mini-coding challenge.

    Cost / License

    • Free
    • Proprietary

    Platforms

    • Online
     
  10. Copy a direct link to this comment to your clipboard

    conCaptcha is a self-hosted captcha which is faster, more user-friendly and more customizable than other captchas - available for PHP and ASP.NET websites. Users no longer have to read any annoying text images, solve difficult math equations or play any puzzle games.

    Cost / License

    • Free
    • Open Source

    Platforms

    • Self-Hosted
     
  11. Copy a direct link to this comment to your clipboard

    Multilingual captcha developed by and for EU countries.

    Cost / License

    • Free
    • Open Source

    Platforms

    • Self-Hosted
     
  12. Captcha icon
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    Protect your business from bots and spam while ensuring 100% data privacy compliance. No puzzles, no tracking – just invisible security that works.

    Cost / License

    • Subscription
    • Proprietary

    Platforms

    • Software as a Service (SaaS)
    • Online
     
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