CoinList - Build a diverse portfolio of pre-launch token investments
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.
Crypto Buyer's Guide - Extensive cryptocurrency buying guide
MTcaptcha - Enterprise Captcha solutions
CoinCap.io - Shows the prices of different cryptocurrencies from ShapeShift.
GeeTest CAPTCHA - GeeTest protects your websites, mobile Apps and APIs from bot threats.