Custom login and registration. 自定义登录注册。
Asks commenters to complete a simple CAPTCHA if they don't have a previously approved comment, or if Akismet thinks their comment is spam.
Add directory capabilities and other functionality to the great Gravity Forms plugin.
Adds Captcha Code anti-spam methods to WordPress forms. Forms include comments form, registration form, lost passwordform and login form.
Contact form that sends the data to email and also to a database list and CSV file.
HumanCaptcha is plugin written by Outerbridge which uses questions that require human logic to answer them and which machines cannot easily answer.
Provides Visually Appealing Captchas to Enhance and Secure your WordPress pages. Fortified with ANTI-SPAM FILTER Protection and SPAM COUNTER.
Share your website with others. Places a "Send Link" button on your Webpage allowing your users to tell others about your site - Selectable
BotDetect Captcha plugin is a powerful captcha protection for WordPress login, lost password, registration, and comment forms.
TAT Contact Form plugin add contact us/ feedback responsive form to any page or post.
Mollom protects your site from spam, profanity, and unwanted posts. Focus on public and social engagement. Focus on things that matter.
Eazy C(omment)F(orm) Captcha adds a captcha with a mathematic exercise to the comment form, preventing bots to spam your comments.
Spam Master is the Ultimate Spam Protection plugin that blocks new user registrations and post comments with Real Time anti-spam lists.
Math Captcha is a 100% effective CAPTCHA for WordPress that integrates into login, registration, comments, Contact Form 7 and bbPress.
Stop a lot of spambots from polluting your site by making visitors identify a custom word displayed as an image before commenting.
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