Cap Captcha Alternatives

Cap Captcha is described as 'Lightweight, modern open-source CAPTCHA alternative designed using SHA-256 proof-of-work and JS instrumentation' 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, SaaS, Self-Hosted, 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 Procaptcha, ALTCHA, PrivateStater and IronWall.

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Alternatives
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Alternatives list

  1. Captoshi icon
     1 like

    Captoshi is a Web3 startup redefining online earning through interactive math challenges.

    Cost / License

    • Free
    • Proprietary

    Platforms

    • Online
    Good alternative?
     
  2. Multilingual captcha developed by and for EU countries.

    Cost / License

    • Free
    • Open Source

    Platforms

    • Self-Hosted
    Good alternative?
     
  3. Captcha icon
     Like

    Protect your business from bots and spam while ensuring 100% data privacy compliance. No puzzles, no tracking – just invisible security that works.

    Cost / License

    • Paid
    • Proprietary

    Platforms

    • Software as a Service (SaaS)
    • Online
    Good alternative?
     
  4. reCaptcha plugin is an effective security solution that protects your WordPress website forms from spam entries while letting real people pass through with ease. It can be used for login, registration, password recovery, comments, popular contact forms, and others.

    Cost / License

    Application type

    Platforms

    • Wordpress
    Good alternative?
     
  5. Easy to use - Nothing stupid your visitors have to type before the form submits.

    Cost / License

    • Free
    • Proprietary

    Platforms

    • Self-Hosted
    • PHP
    Good alternative?
     
  6. Privacy-first, self-hosted CAPTCHA for the modern web. No Google. No telemetry. No visual puzzles. Protect your software from bots without handing over your users' data to a third party.

    Cost / License

    Application type

    Platforms

    • Online
    • Self-Hosted
    • Software as a Service (SaaS)
    • Python
    Good alternative?
     
  7. Captcheck icon
     Like

    Open source reCAPTCHA alternative.

    Cost / License

    • Free
    • Open Source

    Platforms

    • Online
    • Self-Hosted
    Good alternative?
     
  8. Confident Technologies provides free CAPTCHA security software called Confident CAPTCHA, a picture CAPTCHA that stops spam and bots. Download our free CAPTCHA security software today.

    Cost / License

    • Freemium
    • Proprietary

    Alerts

    • Discontinued

    Platforms

    • Online
    Good alternative?
     
  9. Synthient icon
     Like

    Synthient offers cutting edge bot and fraud protection while also giving you deep insights into your visitors. Track repeat visitors, device details, and the potential risk to your platform.

    Cost / License

    • Paid
    • Proprietary

    Platforms

    • Online
    Good alternative?
     
  10. A zero database architecture, powered by a proprietary hybrid in-memory indexing engine algorithm, that enables CAPTCHA authentication to be performed using minimal data bits against server memory.

    Cost / License

    • Freemium
    • Proprietary

    Platforms

    • Online
    • Software as a Service (SaaS)
    Good alternative?
     
  11. AuthKong icon
     Like

    AuthKong is a smart captcha service designed to protect websites from spam and abuse while ensuring real users can pass through effortlessly. It offers a more user-friendly and effective alternative to traditional captcha systems like reCAPTCHA, featuring easy-to-use slider and...

    Cost / License

    • Freemium
    • Proprietary

    Platforms

    • Online
    Good alternative?
     
  12. 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

    • Paid
    • Proprietary

    Platforms

    • Software as a Service (SaaS)
    Good alternative?
     
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