Houseparty - Brining empathy to online communication.
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.
Booyah - Video chat with up to 12 friends at the same time.
MTcaptcha - Enterprise Captcha solutions
Slack - A messaging app for teams who see through the Earth!
GeeTest CAPTCHA - GeeTest protects your websites, mobile Apps and APIs from bot threats.