Invisible Anti-Spam & CAPTCHA — reCAPTCHA Alternative for All Forms
Summary
The WordPress plugin Invisible Anti-Spam & CAPTCHA — reCAPTCHA Alternative for All Forms provides invisible, device-based spam protection using adaptive proof-of-work. It aims to cover all forms on a WordPress site—including core, WooCommerce, and dozens of form builders—without external services, while emphasizing GDPR/privacy-friendly operations and easy setup. The project is open-source, with ongoing maintenance and extensive feature updates to improve detection, compatibility, and user experience.