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.
CCProxy - Want to share Internet connection? Get every computer online through a single Internet connection?
GeeTest CAPTCHA - GeeTest protects your websites, mobile Apps and APIs from bot threats.
Apache Traffic Server - Fast, scalable and extensible HTTP/S 2 and 1.1 compliant caching proxy server.
MTcaptcha - Enterprise Captcha solutions
FreeProxy - Feature summary from website:* Internet connection sharing with demand dialling