List of the Best WordPress Antispam Plugins
The number one WordPress antispam plugin in the repository, developed by the Automattic team – Akismet brings enterprise-level spam protection to your WordPress site. With Akismet, the user installs and activates plugin using an API key (signup required). The plugin works by uploading all incoming comments to the Akismet server. Comments then undergo hundreds* of antispam algorithms (* we really don’t know the exact number). Correct comments are published, while the rest are thrashed to the spam queue.
This WordPress Anti Spam plugin detects automated comment spam to save you the constant nuisance. It does it without asking your user’s annoying questions, quizzes or Captcha. Simply install to start blocking spam. The free plugin is free for commercial and business sites as well as personal blogs. No API key required.
The next best choice after Akismet would be Anti-Spam Bee. This free plugin is full of great features and doesn’t require registration like Akismet does. Anti-Spam Bee is free for personal and commercial use, so no matter your website you can be spam-free.
WP-SpamShield Anti-Spam handles comment spam, registration spam, trackback spam, and contact form spam. That’s a lot of spam! The plugin does not allow spam to enter the WordPress database using a multitude of methods, one being an advanced comment logging and blacklisting features which helps block persistent spammers. And with WP-SpamShield Anti-Spam you can also block comments for visitors using a proxy server
Growmap Anit Spambot (GASP) is another free plugin option, which adds a client-side generated checkbox to the comment box asking users to confirm that they are not a spammer. You can set the maximum amount of comments a user can have to help limit spammers trying to post to your site. So GASP essentially stops spam bots by adding dynamically generated named fields to comment form.
GoodBy Captcha eliminates spam-bot signups, spam comments, and brute force attacks by preventing spam comments from entering the WordPress database. The plugin applies antispam measures in signup pages as well as login and password reset pages to stop spam before it starts.
WatchGuard is a WordPress MU, BuddyPress and bbPress compatible antispam plugin. It follows Akismet and CleanTalk procedure by checking comments for spam on external servers. The API connection is even encrypted with SSL for added security.
10. Spam Destroyer
Spam Destroyer was designed to be as unobtrusive to your readers as possible. This lightweight plugin stops automated spam without putting off your comments and is something you might consider for a small blog or low traffic website.
Stop Spammers Spam Prevention helps to prevent comment spam, as well as limits login attempts. The plugin utilizes over 20 different checks for spam and malicious events to detect spam. When the plugin flags a comment or login attempt, users are allowed a second attempt via a denied request page.
Here users are presented with a captcha screen in order to prevent them from being blocked. The Captcha can range from OpenCaptcha, Google reCaptcha, or SolveMedia Captcha.