AddThis - AddThis free website tools include share buttons, targeting tools and content recommendations help you get more likes, shares and followers and keep them coming back.
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.
Sharingbuttons.io - Quickly generate social sharing buttons with a tiny performance footprint.
reCAPTCHA - reCAPTCHA is a free security service that protects your websites from spam and abuse.
AddToAny - Share buttons by AddToAny, the universal sharing platform for websites and apps.
GeeTest CAPTCHA - GeeTest protects your websites, mobile Apps and APIs from bot threats.