There are 3 other file types using
the PROJ file extension!

proj file icon.proj - Insight II NMR project file

proj file icon.proj - Poseidon for UML project information file

proj file icon.proj - L3DT project

Detailed description

Software that works with proj file extension

Add comment

Bookmark & share this page with others:

PROJ file extension - Apple NeXT Interface Builder project file

What is proj file? How to open proj files?

File type specification:

Various data file type icon Various data file type

proj file icon: proj filetype icon

The PROJ file extension is related to Interface Builder from Apple. A *.proje file contains project. Interface Builder first made its appearance in 1988 as part of NeXTSTEP.

PROJ file extension might also be used by other programs for their projects.

The default software associated to proj file type:

Interface Builder icon

Apple, Inc. logo Interface Builder  Apple macOS / Mac OS X software

Company or developer:
  Apple, Inc.

Interface Builder is a software development program for Mac OS X and part of Xcode.

Help how to open PROJ files:

Due the variability and uncertainty of this file type group, there is no general information available, about how to open this various data file format. However most files with extension from this group are usually not meant to be opened or viewed directly. If there are associated applications or programs listed below the extension description, you can always try to check their website for additional informations on their forums or other type of customer support.

For general information try to look at:
Identifying unknown file formats

How to convert file with extension PROJ:

Due the variability and uncertainty of this file type group, there is no general information available, about how to convert this various data file format. However most files with extension from this group are usually not in formats, which can be converted. If there are associated applications or programs listed below the extension description, you can always try to check their website for additional informations on their forums or other type of customer support.

List of software applications associated to the .proj file extension

Recommended software programs are sorted by OS platform (Windows, Mac OS X etc.) and possible program actions
that can be done with the file
: like open proj file, edit proj file, convert proj file, view proj file, play proj file etc. (if exist software for corresponding action in File-Extensions.org's database).

Hint:
Click on the tab below to simply browse between the application actions, to quickly get a list of recommended software, which is able to perform the specified software action, such as opening, editing or converting of the proj files.

  • Open proj file
  • Save proj file
  • Edit proj file
  • Create proj file

Software that open proj file - Apple NeXT Interface Builder project file

Click on the link to get more information about Interface Builder for open proj file action.

Apple macOS / Mac OS X:

Previous file extension
PROCSPEC file extension

File-Extensions.org > Various data file types

Next file extension
file extension PROJDATA

 

Follow us!

Enter any file extension without dot (e.g. pdf)
Search for file extension details and associated application(s)

RSS feed