AuthKong Alternatives

AuthKong is described as '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' and is an website in the online services category. There are more than 10 alternatives to AuthKong, not only websites but also apps for a variety of platforms, including SaaS, Self-Hosted, JavaScript and PHP apps. The best AuthKong alternative is Cap Captcha, which is both free and Open Source. Other great sites and apps similar to AuthKong are Anubis, reCAPTCHA, hCaptcha and PrivateStater.

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Alternatives list

  1. Cap Captcha icon

    Cap Captcha

     25 likes

    Lightweight, modern open-source CAPTCHA alternative designed using SHA-256 proof-of-work and JS instrumentation

    Cost / License

    • Free
    • Open Source

    Application type

    Platforms

    • Self-Hosted
    • Docker
    Cap Captcha screenshot 1
     
  2. Anubis icon

    Anubis

     17 likes

    Applies sha256 proof-of-work challenges to incoming HTTP requests, targeting AI crawlers, bots that ignore robots.txt, and automated scrapers, protecting server resources and preventing unwanted search engine indexing for privacy-focused sites.

    49 Anubis alternatives

    Cost / License

    • Free Personal
    • Open Source (MIT)

    Application types

    Platforms

    • Self-Hosted
    • Go (Programming Language)
    • Docker
    Anubis screenshot 1
     
  4. reCAPTCHA icon

    reCAPTCHA

     127 likes

    reCAPTCHA is a free service that protects your site from spam and abuse, using risk analysis techniques to tell humans and bots apart.

    31 reCAPTCHA alternatives

    Cost / License

    • Freemium
    • Proprietary

    Application type

    Platforms

    • Online
    reCAPTCHA screenshot 1
     
  5. hCaptcha icon

    hCaptcha

     12 likes

    hCaptcha is designed to solve the most labor intensive problem in machine learning: labeling massive amounts of data in a timely, affordable, and reliable way.

    Cost / License

    • Freemium
    • Proprietary

    Application type

    Platforms

    • Online
    hCaptcha screenshot 1
     
  6. PrivateStater icon

    PrivateStater

     1 like

    Analytics, Captcha, Feedback widget in one script.

    Cost / License

    • Freemium
    • Proprietary

    Application type

    Platforms

    • Online
    • Software as a Service (SaaS)
    PrivateStater screenshot 1
     
  7. IronWall icon

    IronWall

     1 like

    IronWall is a Proof-of-Work (PoW) rate-limiting protocol designed to protect high-value API endpoints (AI generation, Auth, SMS triggers) from automated abuse.

    Cost / License

    • Freemium
    • Open Source (MIT)

    Application type

    Platforms

    • Online
    • Software as a Service (SaaS)
    IronWall screenshot 1
     
  9. mCaptcha icon

    mCaptcha

     4 likes

    A no-nonsense CAPTCHA system with seamless UX | Backend component.

    Cost / License

    Application type

    Platforms

    • Online
    • Self-Hosted
    • Software as a Service (SaaS)
    mCaptcha screenshot 1
     
  10. mosparo icon

    mosparo

     5 likes

    mosparo is the modern solution for protecting your online forms from spam. The protection method is quite simple: mosparo blocks spam using rules matching the form’s data. The detection method is comparable to an e-mail spam filter.

    Cost / License

    • Free
    • Open Source (MIT)

    Application type

    Platforms

    • Online
    • Self-Hosted
    • Python
    • JavaScript
    • Drupal
    • Django
    • PHP
    • Mautic
    • Wordpress
    A screenshot from the software mosparo with the empty project list.
     
  11. unCAPTCHA icon

    unCAPTCHA

     1 like

    CAPTCHAs are the Internet's first line of defense against automated account creation and service abuse. Google's reCaptcha, one of the most popular captcha systems, is currently used by hundreds of thousands of websites to protect against automated attackers by testing...

    Cost / License

    • Free
    • Open Source

    Platforms

    • Linux
     
  12. UniqPin icon

    UniqPin

     3 likes

    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
    UniqPin screenshot 1
     
  13. Mollom icon

    Mollom

     2 likes

    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
     
  14. MTcaptcha icon

    MTcaptcha

     3 likes

    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
    • Proprietary

    Platforms

    • Software as a Service (SaaS)
    MTCAptcha Standard
     
12 of 17 AuthKong alternatives