reCAPTCHA Alternatives
reCAPTCHA is described as 'free CAPTCHA service that helps to digitize books, newspapers and old time radio shows'. There are more than 10 alternatives to reCAPTCHA, not only websites but also apps for a variety of platforms, including Self-Hosted solutions, SaaS, PHP and JavaScript. The best alternative is hCaptcha, which is free. Other great sites and apps similar to reCAPTCHA are Friendly Captcha (Freemium, Open Source), MTcaptcha (Paid), Solve Media's CAPTCHA TYPE-IN™ (Paid) and Mollom (Freemium).
- hCaptcha allows websites to make money serving this demand while blocking bots and other forms of abuse. View 14 alternatives to hCaptcha
- The user-friendly CAPTCHA alternative. Friendly Captcha is a tool for preventing spam on your website. View 9 alternatives to Friendly Captcha
- Freemium • Open Source
- Online
- Self-Hosted
- Software as a Service (SaaS)
Friendly Captcha vs reCAPTCHA
The most secure and privacy-aware solution on the market - Enterprice captcha service with no captcha capabilities. GDPR and Accessibility (WCAG 2.1) Compliant. View 9 alternatives to MTcaptcha
- Solve Media's CAPTCHA TYPE-IN ads are an easy plug-in solution that saves your users time while making your site more secure and more profitable. Instead of struggling with difficult puzzles, users enter a simple brand message or security phrase. View 11 alternatives to Solve Media's CAPTCHA TYPE-IN™
- 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. View 17 alternatives to Mollom
Discontinued
"The Mollom content moderation service is no longer available … as of 2 April 2018."
No screenshots yet- Freemium • Proprietary
- Online
- A configurable captcha solution, focusing on accessibility & simplicity whilst maintaining security. View 12 alternatives to visualCaptcha
Discontinued
As from Dec 26, 2016: Please note visualCaptcha is no longer actively developed. It still works and should continue to, but it won't be improved by the initial team anymore. ...
Source: https://github.com/emotionLoop/visualCaptcha/blob/master/README.md- Free • Open Source
- Self-Hosted
visualCaptcha vs reCAPTCHA
Free, open-source, self-hosted. - GeeTest protects your websites, mobile apps and APIs from bad bot attacks with zero user friction. View 13 alternatives to GeeTest CAPTCHA
- Open-source implementation of server-side spam filtering of blog comments and forum posts. View 16 alternatives to Sblam!No screenshots yet
- Free • Open Source
- Linux
- Online
- UniqPin is a free for non-commercial use service which destiny improve ability of interfaces detect a human or a computer operate with it. View 11 alternatives to UniqPin
- A plugin to make the process of creating a negative captcha in Rails much less painful. View 11 alternatives to Negative Captcha