A dgx file extension is related to the IBM Rational XDE, a development tool from IBM. A dgx file contains diagram.
Software that open dgx file
DGX file extension - IBM Rational XDE diagram
What is dgx file? How to open dgx files?
File type specification:
The dgx file extension is associated with the IBM Rational XDE, an eXtended Development Environment for Microsoft Windows, Linux and Unix systems.
The dgx file stores diagram from Rational XDE.
The default software associated to open dgx file:
Rational XDE 
(obsolete software)
Company or developer:
IBM
Rational XDE is eXtended Development Environment for software developers. It is discontinued product.
List of software applications associated to the .dgx file extension
Recommended software programs are sorted by OS platform (Windows, macOS, Linux, iOS, Android etc.)
and possible program actions that can be done with the file: like open dgx file, edit dgx file, convert dgx file, view dgx file, play dgx 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 dgx files.
Software that open dgx file - IBM Rational XDE diagram
Programs supporting the exension dgx on the main platforms Windows, Mac, Linux or mobile. Click on the link to get more information about Rational XDE for open dgx file action.
Multiplatform:
Rational XDE (obsolete/discontinued)
