.MSM File Extension

Windows Installer Merge Module

Developer Microsoft
3.6  |  10 Votes

What is an MSM file?

Database of a "merge module" that contains installation settings and properties for a specific software installer; includes files, resources, registry entries, and setup information; often contained within an .MSI file.

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MSM files are also called "merge package files." Since they are usually part of an installer package, MSM files should not be opened manually.

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Programs that open or reference MSM files

Other Windows installation program

Multisim Circuit Design File

Developer National Instruments
4.0  |  4 Votes

Circuit design created by Multisim, a Simulation Program with Integrated Circuit Emphasis (SPICE) environment used to teach electronics theory and design and prototype circuitry; contains a design of an electrical circuit board, which includes place diodes, transistors, indicators, and power components.

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To create the MSM file, select File → Save As....

The MSM file is used by the 2001 version of Multisim. As new versions of Multisim are released, new file extensions are used to save the circuit designs. For example, version Multisim 7 uses the .MS7 file extension.

Programs that open or reference MSM files


My Singing Monsters Composer Song

Developer Big Blue Bubble
3.3  |  4 Votes

An MSM file may also be a song file created by My Singing Monsters Composer, a music creation app for Android and iOS. It contains song data, including the notes determining how instruments will play in the composition. MSM files also store metadata, such as the song's name and creator.

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Big Blue Bubble develops My Singing Monsters Composer, a mobile app that features monsters playing music. In the app, you are the maestro conducting an orchestra of monsters as you make music.

When you save your composition as a song, the app creates an MSM file to store the song data. You can also share the song with other My Singing Monsters Composer users by tapping the music notes button in the upper-left corner of the app, tapping the mail icon to the right of the song, then choosing how you want to share it (e.g., via email, cloud storage, etc.).

Common MSM Filenames

ComposerSong.msm - Default filename given to MSM files.

How to open an MSM file

You can open MSM files with My Singing Monsters Composer in Android and iOS. For example, to open an MSM file with the Android version of My Singing Monsters Composer, tap the music notes button in the upper-left corner of the app, then choose the song (provided the MSM file is located in the correct directory on the device).

Programs that open MSM files

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