Very effective anti-spam plugin that eliminates comment spam, and registration spam. Combines many effective methods for identifying spammers and keeping them off your site. THe plugin is designed to be very light weight so it will not interfere with the operation of your website. Easy to install and default options work perfectly on most sites. Will not lock you out. No Captchas needed. Works with JetPack Protect.

Friendly Captcha is a privacy-first anti-bot solution that protects WordPress website forms from spam and abuse.

Prevent people from registering with emails that contain a subdomain to help reduce spam.

The one plugin you need to block disposable/fake emails.

Want to protect your contact forms too? Upgrade to Anti-Spam Zapper PRO by DesignSmoke to stop all spam comments and form submissions on your WordPress website or WooCommerce store.

Block your website or pages based on geolocation (country, state, city, lat/lng/radius)

Protect your Wordpress blog with our amazing bot&SPAM blocker. Don't let hackers get your website down, prevent spam and content scraping, block all hacking attempts and boost your blog performance.

Block spam with cookies and JavaScript. All Spambots will remain away from your blog. Without settings or Captcha, install and forget the spam.

This plugin allows you to implement Google reCAPTCHA (CAPTCHA) into your web forms.

Verifies email addresses in real-time during form submissions to prevent invalid, disposable, temporary, catch-all, free or spamtrap email addresses.

Monkey Trapped Spam is a WordPress plugin that automatically places the IP address of spam comments in the local comments blacklist.

MP Spam Be Gone is the simplest, most effective Spam blocker.

Stop spam bots from registering, logging in, filling out contact forms and commenting on your site without using annoying Captcha codes or puzzles.

Plugin to attempt to stop spam form submissions.

Block or Delete spam user on Registration by email domain & username.

Upon activation, SpamLord eliminates the potential for automated spam comments, as well as trackback spam.

Protect your blog from comment spam and blocks other spam attacks in real time.

Prevents automated SPAM by requiring visitors to answer a question of your choosing (plaintext or regex).

Stop Comment Spam treats any comment by predefined rules to stop spam. It is supposed to be used as additional measure for any other antispam tool especially Akismend and like, by allowing you to set specific rules which distinguish and disallow spam comments without doubt.

Adds Graphic Captcha Protection field for login, registration, lost password, comments pages. Perfect antispam solution for your website.