Drupal is a free and open-source web content management framework.
Google Maps is a web mapping service. It offers satellite imagery, aerial photography, street maps, 360° interactive panoramic views of streets, real-time traffic conditions, and route planning for traveling by foot, car, bicycle and air, or public transportation.
Internet Information Services (IIS) is an extensible web server software created by Microsoft for use with the Windows NT family.
Modernizr is a JavaScript library that detects the features available in a user's browser.
reCAPTCHA is a free service from Google that helps protect websites from spam and abuse.