121 Like reCAPTCHA Good alternative? YES NO reCAPTCHA is a free CAPTCHA service that helps to digitize books, newspapers and old time radio shows. About 200 million CAPTCHAs are solved by humans around the... Free Web No features added Add a feature
2 Like visualCaptcha Alternative? YES NO A configurable captcha solution, focusing on accessibility & simplicity whilst maintaining security. Free Open Source Self-Hosted GitHub Mobile friendly Add a feature 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
3 Like UniqPin Good alternative? YES NO UniqPin is a free for non-commercial use service which destiny improve ability of interfaces detect a human or a computer operate with it. Surpassing a CAPTCHA... Free Personal Self-Hosted JavaScript PHP No features added Add a feature
1 Like PlayThru Good alternative? YES NO The PlayThru is the next generation of online human verification. It is designed to be more simple, more intuitive, and more fun than the current CAPTCHA options. We... Free Web No features added Add a feature
2 Like Sblam! Good alternative? YES NO Open-source implementation of server-side spam filtering of blog comments and forum posts. It's available as a free web service. It's open source, so you can... Free Open Source Linux Web No features added Add a feature
2 Like Confident Captcha Good alternative? YES NO Confident Technologies provides free CAPTCHA security software called Confident CAPTCHA, a picture CAPTCHA that stops spam and bots. Download our free CAPTCHA security... Freemium Web Two factor authentication Add a feature
