Lightweight, modern open-source CAPTCHA alternative designed using SHA-256 proof-of-work.
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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 Self-Hosted, SaaS, PHP and Docker 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 mCaptcha.
Alternatives list
48 Anubis alternativesApplies 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.
Cost / License
- Free Personal
- Open Source (MIT)
Application type
Platforms
- Self-Hosted
- Go (Programming Language)
- Docker
28 reCAPTCHA alternativesreCAPTCHA is a free service that protects your site from spam and abuse, using risk analysis techniques to tell humans and bots apart.
31 hCaptcha alternativeshCaptcha 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
- Free
- Open Source (AGPL-3.0)
Application type
Platforms
- Online
- Self-Hosted
- Software as a Service (SaaS)
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
+9
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
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
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
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)
+2
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)
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United States
India
Switzerland
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