narayanprusty

This plugin adds Google’s No Captcha reCaptcha to WordPress comment, login, registration and lost password forms. A very short and sweet plugin which protects your website from bots trying to put spam comments, launch brute force attacks and creating fake accounts.

Google's No Captcha reCaptcha

This plugin adds Google's No Captcha reCaptcha to WordPress comment, login, registration and lost password forms.

rozx

Protect your WordPress site from spam machines by enable google recaptcha.
Simple and lightweight to install.
Free and fast.

Recaptcha – wp

Protect your WordPress site from spam machines by using google recaptcha. Note the setting is under Settings -> Discussion menu.

Google's No Captcha reCaptcha vs Recaptcha – wp