cdnjs is a free distributed JS library delivery service.
DDoS-Guard is a Russian Internet infrastructure company which provides DDoS protection, content delivery network services, and web hosting services.
jQuery CDN is a way to include jQuery in your website without actually downloading and keeping it your website's folder.
Ajax Autocomplete for jQuery allows you to easily create autocomplete/autosuggest boxes for text input fields.
jQuery UI is a collection of GUI widgets, animated visual effects, and themes implemented with jQuery, Cascading Style Sheets, and HTML.
jQuery is a JavaScript library which is a free, open-source software designed to simplify HTML DOM tree traversal and manipulation, as well as event handling, CSS animation, and Ajax.
Leaflet is the open-source JavaScript library for mobile-friendly interactive maps.
Open Graph is a protocol that is used to integrate any web page into the social graph.
Tilda is a web design tool.