File Extension Library

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.PROJ File Extension

  • Developer by: Apple, Inc.
  • Category: Various data Files

What are .PROJ files and how to open them?

Can't open .PROJ file? Are you wondering what it contains? On our site we will explain to you what this file is, what it is used for and what software opens the .PROJ file.

What is a .PROJ file extension?

.PROJ file extension is created by Apple, Inc.. .PROJ has been classified as Various data Files.

.PROJ is Apple NeXT Interface Builder project

The proj file extension is related to Interface Builder from Apple.

The proj file contains project. Interface Builder first made its appearance in 1988 as part of NeXTSTEP.

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


How to open:

Use Interface Builder to work with *.proj files.

How to convert:

As far as we know, this .proj file type can't be converted to any other file format. This is usually the case of system, configuration, temporary, or data files containing data exclusive to only one software and used for its own purposes. Also some proprietary or closed file formats cannot be converted to more common file types in order to protect the intellectual property of the developer, which is for example the case of some DRM-protected multimedia files.

How to fix problems with .PROJ files

  1. You need to update the application that you normally use to open .PROJ files. Only the latest version of the software supports the current .PROJ file format
  2. You need to check the .PROJ file for viruses. To do this, you need to scan it with a popular antivirus (Norton, Nod32, Kaspersky, Dr.Web, etc.)
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