| .m4v |
iTunes Video File |
| .m |
Objective-C Implementation File |
| .msp |
Windows Installer Patch |
| .m4b |
MPEG-4 Audio Book File |
| .m4r |
iPhone Ringtone File |
| .mw |
Maple Worksheet |
| .mddata |
iPhone Backup File |
| .mdinfo |
iPhone Backup Information File |
| .m4p |
iTunes Music Store Audio File |
| .mom |
Managed Object Model |
| .mobileconfig |
Apple Mobile Configuration File |
| .mdbackup |
iPhone Data Backup File |
| .mobileprovision |
Xcode Mobile Provisioning Profile |
| .mailtoloc |
Mail Internet Location File |
| .mailstationery |
Apple Mail Stationery File |
| .moti |
Apple Motion Title Project Template |
| .moef |
Apple Motion Effect Project Template |
| .motn |
Apple Motion Generator Project Template |
| .motr |
Apple Motion Transition Project Template |
| .moov |
Apple QuickTime Movie |
| .mac |
MacPaint Image |
| .movie |
QuickTime Movie File |
| .metadata_never_index |
Spotlight Never Index File |
| .macbin |
Macbinary Encoded File |