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The File Extension Library

What is a file extension?

Short answer: it's the set of letters after the period (.) in the name of a file.

Long answer: File extensions signify the file format of a file. It tells the operating system (OS) how data was stored in the file. Not all OS, require a file extension though. For instance, this is optional in Unix, but is mandatory with MS-DOS and Windows systems.

In most file formats the file type is actually defined by the contents (first bytes, file structure), but extensions are used to define the application that is used for opening the file.

Below is a detailed database of thousands of file extensions our team has compiled for you. Feel free to browse!


Browse all Extensions:
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WOR - Extension Details
Date Added: January 01, 1970
File Extension:  .WOR
Description 1: Files with the .WOR extension refer to the map workspace file that the MapInfo geographic and mapping analysis software uses. It provides a visual map of a specific area that users can browse and zoom with the help of MapInfo program software. Typical info included have to do with the different locations within the map like demographic and population data. To open MapInfo Workspaces in MapXtreme, they have to be saved as .GST or Geosets files using the Geoset Utility.
File Type:   Data file
Mode: ASCII
Program(s) to Open:  Windows: MapInfo ProViewer, MapInfo Basic or Professional
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