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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:
ABCDEFGHIJKLMNOPQRSTUVWXYZ
TTK - Extension Details
Date Added: January 01, 1970
File Extension:  .TTK
Description 1: TTK is the extension associated with data files the software localization program known as CATALYST generates. Translated files are stored in an extremely optimized database format that is able to store binary and text objects. The TTK files could be software application files saved in an objectorientated database called Project Translation Toolkit, websites or online help systems. They consist of segments, each containing at least one source language string along with the languages equivalent target language translation. A TTK project is sometimes referred to as "Translation Memory.
File Type:   Data file
Mode: ASCII
Program(s) to Open:  Windows: Alchemy CATALYST
Common:
Extension: