Honeypot for Contact Form 7
Honeypot for Contact Form 7 adds honeypot non-intrusive anti-spam functionality to CF7 forms.
Adds "No CAPTCHA reCAPTCHA" field to Gravity Forms as an alternative CAPTCHA option
The #1 Plugin for Blocking Form Spam on WordPress
This plugin provides you an easy captcha without javascript, without images, without math. Only a few of CSS and a few of server side.
Slider CAPTCHA is a WordPress plugin that will allow you to replace or add a CAPTCHA field to any WordPress form.
Inserts Google’s new reCAPTCHA into Infusionsoft web forms