iRewardHealth - Motivating healthy behavior change
DOOM Captcha - Captchas don't have to be boring
Paceline - Your health is your wealth 🏃🏻♀️
GeeTest CAPTCHA - GeeTest protects your websites, mobile Apps and APIs from bot threats.
SQRL - Save $1 for every 1000 steps you take
Humans Not Invited - CAPTCHA that filters out humans and only lets programs pass