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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
CA - Extension Details
Date Added: August 02, 2009
File Extension:  .CA
Description 1: .CA file extension is linked with Initial Telnet Cache. This file stores the information that is used for establishing Telnet connections. It is normally found on Linux/Unix platforms. The list of the words root DNS servers are found in "named.ca. Telnet is a network protocol utilized by LAN or internet connections. It was developed in 1969 initially with RFC 15 and IETF STD 8 as its standard. It provides access on a remote machine via commandline interface.
Description 2: .CA file extension is linked with CLAN Conversion Analysis. This is the file extension for the conversion analysis file utilized by CLAN an application suite that can be downloaded, installed and used as one application. It has two components: [1] the CLAN editor used to edit either CHAT or Conversion Analysis file format and provides an array of additional functions; [2] set of data analysis programs runs from a "Commands Window which is a separate window. The CLAN Output window displays the results of the analytic programs. CLAN is owned and developed by CHILDES system.
File Type:   Data File
Mode: ASCII
Program(s) to Open:  Windows: CLAN
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