A plugin to make the process of creating a negative captcha in Rails much less painful
created at June 1, 2008, 4:59 p.m.
Generic javascript implementation of hashcash
created at Dec. 29, 2010, 6:19 p.m.
simple CAPTCHA solver in python
created at Feb. 18, 2011, 12:09 a.m.
MotionCAPTCHA jQuery Plugin - Stop Spam, Draw Shapes
created at May 27, 2011, 2:03 p.m.
Django Simple Captcha is an extremely simple, yet highly customizable Django application to add captcha images to any Django form.
created at April 4, 2012, 2:35 p.m.
node.js generate captcha using c++ library CImg without install any other lib or software
created at Jan. 17, 2013, 8:03 a.m.
visualCaptcha's Main Repo. This is a collection of all the different versions/repos of visualCaptcha.
created at June 14, 2013, 3:43 p.m.
A visual, click-based CAPTCHA for human authentication.
created at Jan. 11, 2014, 11:32 p.m.
Tesseract Open Source OCR Engine (main repository)
created at Aug. 12, 2014, 6:04 p.m.
Universal python API to captcha solving services
created at Feb. 10, 2015, 7:53 a.m.