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.
ShareThis - Grow your audience with easy-to-use sharing tools.
GeeTest CAPTCHA - GeeTest protects your websites, mobile Apps and APIs from bot threats.
Shareaholic - Shareaholic is trusted by over 300000 brands, businesses, agencies, and individuals to grow website traffic and engagement 24 hours a day, 7 days a week.
MTcaptcha - Enterprise Captcha solutions
AddToAny - Share buttons by AddToAny, the universal sharing platform for websites and apps.