visualCaptcha

A configurable captcha solution, focusing on accessibility & simplicity whilst maintaining security.

• 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

3 Like

UniqPin

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

3 Like

Captcheck

Open source reCAPTCHA alternative.

Free Open Source Web Self-Hosted

0 Like

Negative Captcha

A plugin to make the process of creating a negative captcha in Rails much less painful.

Free Open Source Self-Hosted

0 Like

phpformmailer

Easy to use - Nothing stupid your visitors have to type before the form submits.

• It is not a captcha functionality. Guest • Dec 2017 • 3 agrees and 0 disagrees Disagree   Agree

Free Self-Hosted PHP