Friendly Captcha is a captcha service from Germany that helps users protect websites from bots. It works in such a way that no interaction with the captcha service is necessary except for clicking on a checkbox. Thus, the user does not have to select images or decipher bent letters.

Private Captcha offers a user-friendly CAPTCHA solution that protects forms and APIs while maintaining high privacy standards without requiring extra integration efforts. Instead of asking users to solve complex puzzles or track their behavior, Private Captcha solves an invisible cryptographic task in the background. The system automatically adjusts the task difficulty, ensuring smooth access for real users while making it too costly for bots to attempt. Cryptographic task provides equal security regardless of bot's intelligence level, making it effective even as AI technology improves.