PRJ File Type
- The quick factsWhat are PRJ files and how to open them
Are you having problems opening a PRJ file or just wondering what they contain? We explain what these files are used for and show you software that we know can open or otherwise handle your files.
What is a PRJ file?
PRJ files have multiple uses, and Project is one of them.
Project File
Files that contain the .prj file extension are most commonly used to store project files. The .prj file extension is a generic extension that is used by a variety of different project applications. PRJ files typically contain the project settings and other project data, including references to other files that the related project may use.
Some applications that use the .prj file extension for project files include Maestro, Microsoft Visual Basic, Visual Cafe, Turbo C, FireFly SDK, and AwpHelp.
Although many software applications use the .prj file extension, not all PRJ files are interchangeable across all applications. This means that a PRJ file that has been created in one application may not be able to be opened with another application that uses the .prj file extension due to differences in the format of the file type.
How to open PRJ files
Important: Different programs may use files with the PRJ file extension for different purposes, so unless you are sure which format your PRJ file is, you may need to try a few different programs.
While we have not verified the apps ourselves yet, our users have suggested 10 different PRJ openers which you will find listed below.
Last updated: June 29, 2022
All known file formats using extension .PRJ
While Project File is a popular type of PRJ-file, we know of 17 different uses of the .PRJ extension. Different software may use files with the same extension for different types of data.
- 3D Studio Project
- Anjuta Project
- ASIC Project
- Borland C/C++ Project
- Clarion Project
- Ergo!pro Project
- FireFly SDK Designer Project
- Harvard Total Project Manager Project
- MADE Project
- MATLAB Compiler Project
- My House Project
- Project File
- Shapefile Projection Metadata
- Total Project Manager Project
- UltraEdit Project
- Virtual T IDE Project
- Xenosaga Sound Info
UltraEdit Project
We know that one PRJ format is UltraEdit Project. We have not yet analyzed in detail what these files contain and what they are used for. We're working on it.
PRJ opener for Windows
We have identified one PRJ opener that is compatible with this specific type of PRJ file.
![]() | UltraEdit | Verified |
MATLAB Compiler Project
We know that one PRJ format is MATLAB Compiler Project. We have not yet analyzed in detail what these files contain and what they are used for. We're working on it.
Programs that open these PRJ files
We have identified one PRJ opener that is compatible with this specific type of PRJ file.
![]() | MATLAB | Verified |
More file formats using the PRJ extension
Through our research of PRJ files, we know that the following formats exist. However, we have not yet analyzed them in detail, and we would love to hear from you if you have information about either of them.3D Studio Project
Anjuta Project
ASIC Project
Borland C/C++ Project
Clarion Project
Ergo!pro Project
FireFly SDK Designer Project
Harvard Total Project Manager Project
MADE Project
My House Project
Shapefile Projection Metadata
Total Project Manager Project
Virtual T IDE Project
Xenosaga Sound Info
Various apps that use files with this extension
These apps are known to open certain types of PRJ files. Remember, different programs may use PRJ files for different purposes, so you may need to try out a few of them to be able to open your specific file.
![]() | DxDesigner | User submitted |
![]() | CodeVisionAVR C Compiler | User submitted |
![]() | GENETYX | User submitted |
![]() | PowerDesigner | User submitted |
![]() | Protel SE | User submitted |
![]() | WinEdt | User submitted |
![]() | IDL | User submitted |
![]() | NI LabWindows/CVI | User submitted |
![]() | LabWindows/CVI | User submitted |
![]() | WaveLab | User submitted |
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