Files with proj file extension are associated with the Interface Builder software from Apple. A proj file stores project.
There are 3 other file types using
the PROJ file extension!
.proj - Insight II NMR project file
.proj - Poseidon for UML project information file
.proj - L3DT project
Software that works with proj file extension
PROJ file extension - Apple NeXT Interface Builder project
What is proj file? How to open proj files?
File type specification:
proj file icon:
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.
The default software associated to proj file type:
Company or developer:
Interface Builder is a software development program for Mac OS X (macOs) and part of Xcode. It is an application for designing and testing user interfaces. Developers can use Interface Builder to create user interfaces that follow the Mac OS X (macOS) human-interface guidelines by dragging user-interface elements from a palette of predefined controls and dropping them into the window or view they are configuring.
List of software applications associated to the .proj file extension
Recommended software programs are sorted by OS platform (Windows, macOS, Linux 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).
Click on the tab below to simply browse between the application actions, to quickly get a list of recommended software, which is ableto perform the specified software action, such as opening, editing or converting proj files.
- Open proj file
- Edit proj file
- Create proj file
Software that open proj file - Apple NeXT Interface Builder project
Click on the link to get more information about Interface Builder for open proj file action.