IComparer is an interface provided by the .NET framework, used in conjunction with the Array.Sort and Array.BinarySearch methods. It provides a way to customize the sort order of a collection. It contains a single Compare method that compares two objects and returns a value indicating whether one is less than, equal to, or greater than the other. There is also a generic version of this interface. Supported in .NET 4, 3.5, 3.0, 2.0, 1.1, 1.0. Source: MSDN

SMIL (Synchronized Multimedia Integration Language) is a XML markup language for describing multimedia presentations.

The LWP::UserAgent is a class implementing a web user agent in the libwww-perl library.

MacRuby is an implementation of the Ruby 1.9 programming language in ObjC for Mac OSX

User defined script that is run on a git server after a git push command was issued.

The custom-events tag is an ambigious tag used when a question targets an event in an event-driven system created an maintained by the asker him or her -self.

Java's ScriptEngine system allows you to run/evaluate statements written in other programming languages like Javascript/ECMAScript, Python/Jython, and Tcl/Jacl.

IP Geolocation refers to services or APIs that provide the capability to locate an address by an IP address.