.MD File Extension

Programming file that contains an instruction pattern for each instruction that the target machine supports; referenced by the GNU Compiler Collection (GCC), commonly used for compiling programs on Unix systems.

File or group of files compressed using MDCD compression

File created by Sharkport, a hardware accessory for the PlayStation 2; contains a PS2 saved game created by the Sharkport device; used for copying saved games to the PC and sharing them with other players; can be converted to other saved game formats, such as .PSU, using the PS2 Save Builder.

NOTE: Sharkport also now uses the .PS2 extension for saved games.

Data file saved by Moneydance, a personal finance software program similar to Intuit Quicken or Microsoft Money; stores bank accounts, transactions, budgets, stock portfolios, and other information.

Moneydance supports Mac, Windows, Linux, OS/2, Solaris, and Unix platforms.

An MD file is a MuseData musical score. It contains plain text code that represents a piece of music, as well as metadata describing that work. While MD files are no longer widely used, you can still open them and use them to create sheet music in MuseScore.

You can open an MD file in MuseScore. To do so, select File → Open from the program's menu bar, and then locate and open your MD file. Note that you may receive an error message saying your MD file is corrupted. If you do, click Ignore. The MD file will appear in MuseScore as a musical score.

If you need only to see the plain text notation that an MD file contains, you can open it in any text editor, such as Microsoft Notepad, Apple TextEdit, or Github Atom.