Open Source reCAPTCHA AlternativesTop Anti-Spam Tools and other similar apps like reCAPTCHA
The best open source alternative to reCAPTCHA is Cap Captcha. If that doesn't suit you, our users have ranked more than 25 alternatives to reCAPTCHA and eight of them is open source so hopefully you can find a suitable replacement. Other interesting open source alternatives to reCAPTCHA are mosparo, ALTCHA, mCaptcha and Procaptcha.
- Anti-Spam Tool
- Freemium • Proprietary
- 27 Cap Captcha alternatives
Lightweight, modern open-source CAPTCHA alternative designed using SHA-256 proof-of-work.
License model
- Free • Open Source
Application type
Country of Origin
Portugal
EU
Platforms
- Self-Hosted
- Docker
- 22 mosparo alternatives
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.
License model
- Free • Open Source
Application type
Country of Origin
Switzerland
Platforms
- Online
- Self-Hosted
- Python
- JavaScript
- Drupal
- Django
- PHP
- Mautic
- Wordpress
- 15 ALTCHA alternatives
ALTCHA uses a proof-of-work mechanism to protect your website, APIs, and online services from spam and unwanted content. Unlike other CAPTCHA solutions, ALTCHA is free, open-source and self-hosted, does not use cookies nor fingerprinting, does not track users, and is fully...
License model
- Free • Open Source
Application type
Platforms
- Self-Hosted
- Software as a Service (SaaS)
License model
- Free • Open Source
Application type
Platforms
- Online
- Self-Hosted
- Software as a Service (SaaS)
Comments about mCaptcha as an Alternative to reCAPTCHA
- 20 Procaptcha alternatives
Prosopo Procaptcha redefines user verification with a unique approach that emphasizes privacy, security, and decentralization. It's a pioneering solution designed to offer an alternative to conventional, centralized CAPTCHA systems that often compromise user privacy.
License model
- Freemium • Open Source
Application types
Platforms
- Online
- Software as a Service (SaaS)
Comments about Procaptcha as an Alternative to reCAPTCHA
Peter JepefIt works better, it costs less, it doesn't track your users, it has invisible challenges for humans stops bots. Need I say more?
- 18 IconCaptcha alternatives
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.
License model
- Free • Open Source
Platforms
- Self-Hosted
License model
- Free • Open Source
Platforms
- Self-Hosted
EU Captcha Features
License model
- Free • Open Source
Platforms
- Online
- Self-Hosted
Captcheck Features
It is Free and Open Source. Inspectable.