Math Captcha is a very effective CAPTCHA for WordPress that integrates into login, registration, comments, bbPress and Contact Form 7.
Features include:
- Select where to use math captcha: login, registration and lost password forms, comments, bbPress and Contact Form 7
- Hiding captcha for logged in users
- Select which mathematical operation to use
- Displaying captcha as numbers and/or words
- Option to set captcha field title
- Option to set captcha input time
- .pot file for translations included