#1 super security anti-spam captcha plugin for WordPress forms.
Captcha Bank is an easy to use wordpress security plugin to prevent spam on your site while letting real people pass through with ease.
An easy to use wordpress Captcha plugin to prevent spam on your site. You can use Image Captcha to protect comments and the admin panel.
Captcha Booster is an effective and powerful plugin that protects you from spam, bots or automated scripts with bullet-proof validations.
The Add new recaptcha google plugin allows you to implement a super security REcaptcha form into web forms.