.M4 File Extension

There is only one file type that uses the .M4 extension:

Macro Processor Library

Macro Processor Library

File written for m4, a Unix macro processor that is included with many Unix and Linux distributions; contains macros in addition to other text, but the macros are expanded when processed by m4; often used for setting up configuration files.

Software's name License Platforms
Any text editor Any text editor AndroidChrome OSiOSLinuxMacWindowsWindows Phone
m4 m4 Linux
MacroMates TextMate MacroMates TextMate Commercial Mac
Other text editor Other text editor LinuxMacWindows

Updated: April 10, 2015

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