There are 5 file types use the .MD file extension:
- Machine Description File
- MDCD Compressed Archive
- Sharkport Saved Game File
- Moneydance Financial Data File
- MuseData Musical Score
1. Machine Description File

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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.
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Updated: October 30, 2010
2. MDCD Compressed Archive

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File or group of files compressed using MDCD compression
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Updated: May 25, 2021
4. Moneydance Financial Data File

- Developer Reilly Technologies
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- Category Data Files
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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.
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Updated: January 11, 2009
5. MuseData Musical Score

- Developer Walter B. Hewlett
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- Category Text Files
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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
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 . 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.
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Updated: September 1, 2020