9 of the most-installed plugins carry this tag, ranked by active installs. The plugin's author chose the tag, not WPBundle.
#8 by installs
The best anti-spam protection to block spam comments and spam in a contact form. The most trusted antispam solution for WordPress and WooCommerce.
#84 by installs
Sophisticated antispam plugin for effective daily comment and trackback spam-fighting. Built with data protection and privacy in mind.
#143 by installs
Fastest growing Anti Spam plugin. No API calls, subscriptions, captcha or puzzle. Full GDPR complaint. For comments, contact form, login, registration
Add hCaptcha, Honeypot, Redirection, and AI-powered form generation to Contact Form 7.
#239 by installs
Advanced antispam for comments, registrations & contact forms. No CAPTCHA, plus email validation and honeypot. We catch spam others miss!
#285 by installs
CloudSecure WP Securityは、管理画面とログインURLをサイバー攻撃から守る、国産・日本語対応のセキュリティ対策プラグインです。 簡単な設定だけで、不正アクセスや不正ログインからWordPressを保護し、サイトのセキュリティを高めます。
#453 by installs
Block form spam in Gravity Forms with an invisible token check, email rejection rules, and optional AI review. No CAPTCHAs for your visitors.
#468 by installs
Protect email addresses and phone numbers on your site and hide them from spambots. Easy to use & flexible.
#990 by installs
Blocks spam the moment you activate it. No CAPTCHA, no setup, no API key. Multi-Layer. Just install and forget.
Every figure is read from the WordPress.org plugin directory's public API, and each page links to the entry it came from. “Most-installed” is the directory's own popularity order. WordPress.org rounds active installs into buckets, so “1+ million” can mean anything from one to two million.
These are the directory's numbers, not my verdicts. I haven't tested these plugins. Where I have checked a deal on one, its page says so and links the deal.