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Some filenames are given extensions longer than three characters. Examples of operating systems that do not impose this limit include Unix-like systems, and Microsoft Windows NT, 95- 98, and ME which have no three character limit on extensions for 32-bit or 64-bit applications on file systems other than pre-Windows 95 and Windows NT 3.5 versions of the FAT file system. Many operating systems do not limit filenames to one extension shorter than 4 characters, as was common with some operating systems that supported the File Allocation Table (FAT) file system.
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Filename extension it is usually noted in parentheses if they differ from the file format name or abbreviation. This is a list of file formats used by computers, organized by type. You can help by adding missing items with reliable sources.
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This is a dynamic list and may never be able to satisfy particular standards for completeness.
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