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.
E-MAILiT - Grow your website traffic, download, install, customize and make more money with our free share buttons and easy-to-use web publishing solutions for your website or blog.
MTcaptcha - Enterprise Captcha solutions
SimpleShare.IO - A helper site to build buttons for sharing links on the various social sites, but without loading...
GeeTest CAPTCHA - GeeTest protects your websites, mobile Apps and APIs from bot threats.