CB Captcha24 reviews
This Community Builder plugin produces a captcha image and a security field along with verification logic. This security feature can be included (via plugin parameter settings) in one or more of the following CB processes: registration process, forgotten password process and email user process. A number of parameter settings are available to customize the captcha image. A must have plugin to protect against spambots!
Requirements: CB 1.4 or better; PHP 4/5 with GD and FreeType libraries
Note: This package along with 14 other CB Team released addons is offered as part of the Advanced and Professional membership subscription packages.