hCaptcha

hCaptcha is a free alternative to reCAPTCHA that helps websites protect themselves from bots while also contributing to the development of artificial intelligence research. It presents users with simple tasks like identifying images, which are then used to train AI models. hCaptcha is preferred by some users as it offers a more human-friendly experience compared to the sometimes challenging reCAPTCHA tests. This makes it a popular choice for websites seeking a more user-friendly way to combat bot activity. hCaptcha is used by a wide range of websites, including those in the e-commerce, social media, and content creation industries.

Website: https://hcaptcha.com