MM File Extension
Objective-C++ Source Format
- File Type mm
- Developer FreeMind
- Popularity
- Application RAD Studio
- Category Developer Files
What is a MM file?
Objective-C++ Source Format, identified by the MM extension, is a Developer Files type and includes 1166 files.
MM file support extends to various operating systems, including Mac OS, Linux and Windows. When working with MM files, you can rely on 5 programs, including Xcode, Sublime Text and RAD Studio.
Programs that support MM files
How to open a MM file?
If you can’t open a MM file, it is usually because the necessary software is missing. To resolve the issue, select the right program from the list for your operating system. Then go to the official website of the developer, download the software, and install it.
When it comes to opening and working with MM files, Xcode, Sublime Text and RAD Studio are the top choices for users. To install the updated version of RAD Studio, simply go to the Embarcadero site and download the installer compatible with all major platforms.
Once the process is complete, RAD Studio should take over as the default application for MM files.
Set RAD Studio as the default MM program
Changing Default Programs in Windows
- Right-click on your MM file, then choose the "Open with" option and select "Choose another application" from the available options;
- In the pop-up window, select the RAD Studio application;
- Check the "Always use this application" checkbox, and then click "OK" to apply the selected application as the default for opening MM files.
Change Default Program on Mac
- Right click or Control + left click on the desired MM file;
- Select "Open in application" and click "Other";
- At the bottom of the window, you will find the "Enable" menu. Default, will be set to "Recommended Programs";
- Choose "All Programs" in this menu and search for RAD Studio. Check the box next to "Always open in app" to make it the default program.
Solve problems with MM files
Rest assured, any issues with MM files can typically be addressed with simple software adjustments. See the tips below for help.
Why does RAD Studio stop responding or crash intermittently?
RAD Studio crashes can be caused by outdated software. Keep your Embarcadero products up to date by installing the latest updates.
Restarting your computer will solve many common problems, which is why it’s the first thing you should do before changing any settings related to the software.
What are the best practices for repairing a MM file that has gone bad?
Use a data recovery program to open the damaged MM file and from the menu choose "Repair" function to start the repair process. Allow the recovery process to complete, which will automatically repair the damaged developer files.
What are the warning signs that my MM file may be corrupted?
Common indications of damaged MM developer files are:
- Error messages appear during the course of working with the file;
- Editing the archive in Xcode results in slow or unresponsive behavior;
- Opening the file results in an error or a failed attempt;
- Unexpected expansion of the total size of the MM file;
- Opening the file in RAD Studio or other programs causes them to hang or crash;
How to edit a MM file?
To edit MM files, it is essential to install software that supports not only viewing but also editing the developer files. Online MM editors provide limited functionality compared to full-featured software for Objective-C++ Source Format.
List of Top MM editors 2026
Based on the criteria above, here is a selection of MM editors you can use.
| MM Editor Software | Developer | Platforms | Overall Rating |
|---|---|---|---|
| RAD Studio | Embarcadero | Windows | 4.8 out of 5 (42 reviews) |
| Visual Studio Code | Microsoft | Windows, Mac OS, Linux | 4.7 out of 5 (38 reviews) |
| Xcode | Apple | Mac OS | 4.7 out of 5 (39 reviews) |
| Sublime Text | Sublime HQ Pty | Windows, Mac OS, Linux | 4.6 out of 5 (39 reviews) |
| Atom | - | Windows, Mac OS, Linux | 4.1 out of 5 (36 reviews) |
Convert to and from MM
If obstacles arise while working with a MM file, you may convert it to formats like PDF, PPTX, XLSX, XMIND or other similar types for smoother handling.
Keep in mind that converting a MM file may introduce some limitations, but the original format can often be restored.