Tribe of Mentors - Short life advice from the best in the world, by Tim Ferriss
hCaptcha - Do you use a captcha to keep out bots? hCaptcha is a drop-in replacement for reCAPTCHA that earns website owners money and helps companies get their data labeled.
MentorCruise - Personalized mentorship experiences
MTcaptcha - Enterprise Captcha solutions
Frontend Mentor - Supercharge your front-end skills by building in a real-life workflow. Solve real-world HTML, CSS and JavaScript challenges whilst working to professional quality designs.
GeeTest CAPTCHA - GeeTest protects your websites, mobile Apps and APIs from bot threats.