AddThis is a social bookmarking service that can be integrated into a website with the use of a web widget.
Internet Information Services (IIS) is an extensible web server software created by Microsoft for use with the Windows NT family.
Kentico CMS is a web content management system for building websites, online stores, intranets, and Web 2.0 community sites.
ASP.NET is an open-source, server-side web-application framework designed for web development to produce dynamic web pages.
Open Graph is a protocol that is used to integrate any web page into the social graph.
reCAPTCHA is a free service from Google that helps protect websites from spam and abuse.