OpenX - Ad technology platform available as a hosted service or as an open source download.
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.
Metamarkets - We help programmatic buyers, sellers and marketplaces make better decisions in real-time.
MTcaptcha - Enterprise Captcha solutions
Ezoic - Improve & test ads, layouts, & content using artificial intelligence to increase website ad revenue & UX metrics. Google Adsense & Google Publishing Partner
GeeTest CAPTCHA - GeeTest protects your websites, mobile Apps and APIs from bot threats.