PRJ File

What 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. Read more about the other uses further down the page.

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 ten different PRJ openers which you will find listed below.

Last updated: March 10, 2023

All known file formats using extension .PRJ

While Project File is a popular type of PRJ-file, we know of 18 different uses of the .PRJ file extension. Different software may use files with the same extension for different types of data.

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.

3D Studio Project

We know that one PRJ format is 3D Studio Project. We have not yet analyzed in detail what these files contain and what they are used for. We're working on it.

Anjuta Project

We know that one PRJ format is Anjuta Project. We have not yet analyzed in detail what these files contain and what they are used for. We're working on it.

ASIC Project

We know that one PRJ format is ASIC Project. We have not yet analyzed in detail what these files contain and what they are used for. We're working on it.

Autem PLC/SPS Analyzer Pro Project

We know that one PRJ format is Autem PLC/SPS Analyzer Pro Project. We have not yet analyzed in detail what these files contain and what they are used for. We're working on it.

Borland C/C++ Project

We know that one PRJ format is Borland C/C++ Project. We have not yet analyzed in detail what these files contain and what they are used for. We're working on it.

Clarion Project

We know that one PRJ format is Clarion Project. We have not yet analyzed in detail what these files contain and what they are used for. We're working on it.

Ergo!pro Project

We know that one PRJ format is Ergo!pro Project. We have not yet analyzed in detail what these files contain and what they are used for. We're working on it.

FireFly SDK Designer Project

We know that one PRJ format is FireFly SDK Designer Project. We have not yet analyzed in detail what these files contain and what they are used for. We're working on it.

Harvard Total Project Manager Project

We know that one PRJ format is Harvard Total Project Manager Project. We have not yet analyzed in detail what these files contain and what they are used for. We're working on it.

MADE Project

We know that one PRJ format is MADE Project. We have not yet analyzed in detail what these files contain and what they are used for. We're working on it.

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.

My House Project

We know that one PRJ format is My House Project. We have not yet analyzed in detail what these files contain and what they are used for. We're working on it.

Shapefile Projection Metadata

We know that one PRJ format is Shapefile Projection Metadata. We have not yet analyzed in detail what these files contain and what they are used for. We're working on it.

Total Project Manager Project

We know that one PRJ format is Total Project Manager Project. We have not yet analyzed in detail what these files contain and what they are used for. We're working on it.

Virtual T IDE Project

We know that one PRJ format is Virtual T IDE Project. We have not yet analyzed in detail what these files contain and what they are used for. We're working on it.

Xenosaga Sound Info

We know that one PRJ format is Xenosaga Sound Info. We have not yet analyzed in detail what these files contain and what they are used for. We're working on it.

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.

Help us help others

File.org helps thousands of users every day, and we would love to hear from you if you have additional information about PRJ file formats, example files, or compatible programs. Please use the links below or email us at submit@file.org to discuss further.