Wellenbrecher – Anti-Spam for Forms, Comments and WooCommerce

This plugin prevents comments spamming using language verification.

Zero Spam makes blocking spam comments and registrations easy.

The #1 Plugin for Blocking Form Spam on WordPress

Unspam makes it harder for spammers to automatedly send spam to your blog by changing the names of the fields in the comment forms.

Auto-discard comment spam before it ever hits your database. Zero-Touch protection — no API keys, no external calls,

Block contact form spam server-side with keywords, honeypot, rate limiting and optional AI — works with Contact Form 7, WPForms, Gravity Forms.