Resources

There are three ways to use reCAPTCHA: using an application plugin, using a library for your programming language, and using the web-based API. The following resources will help you find the correct method for your environment.

We're always looking for new ways to use reCAPTCHA. If you've integrated reCAPTCHA into an application, we'd like to post it here. Please let us know what you come up with.

Community

reCAPTCHA Forum: a place where you can ask questions about reCAPTCHA and plugins
reCAPTCHA Wiki: a place to post any reCAPTCHA related information
reCAPTCHA on Google Code: where many plugins are developed. Ask us for access.

Client API

The client API guide describes how to customize the behavior of the reCAPTCHA widget on your site. This guide applies to all plugins.

Programming Environment Plugins

PHP
ASP.NET
Classic ASP: see this forum post
Python
Perl (contributed by Andy Armstrong)
Ruby (contributed by McClain Looney)
Another Ruby library from Jason L Perry
Java (contributed by Soren)
ColdFusion (contributed by Robin Hilliard)

Application Plugins

WordPress
MediaWiki
phpBB
Movable Type (contributed by Josh Carter)
Drupal (contributed by Rob Loach)
Symfony (contributed by Arthur Koziel)
Typo3 (contributed by Jens Mittag. See also the example of using the plugin)
NucleusCMS (contributed by Matt)
vBulletin (contributed by Magnus)
Joomla (contributed by Robert van den Breemen)
JSP Mailhide (by Tamas Magyar)

API Documentation

These documents describe the low-level reCAPTCHA API. You should reference these documents if you are creating a new plugin