Cryptographp is a PHP script for generate captchas. Cryptographp limit the robots bombarding spams and automating the forms: spaces members subscriptions, guestbooks, forums... This script is free and does not use any database. It is compatible with PHP >= 4.3.0

Current events

2007-03-17: Version 1.4 (consult the changelog)
2006-09-16: Version 1.3
2006-08-19: Version 1.2
2006-04-17: Version 1.1
2006-02-05: Version 1.0

Plugins

Cryptographp also exists into plugins for WordPress, wpMu for WordPress, Symfony and Guppy. Consult the Download part.

Examples

These captchas were generated by Cryptographp.

Licence

Cryptographp is diffused with completed CeCILL licence
The CeCILL licence is GNU GPL compatible.