Files with SUB extension might also be found as component packages from IBM Rational Rose platform. 

There are 6 other file types using
the SUB file extension!

sub icon.sub - DivX movie subtitle file format [common]

sub icon.sub - CloneCD sub channel file

empty icon.sub - Insight II subset definition file

empty icon.sub - SubmitWolf website submission project

empty icon.sub - SWAT subbasin input file

empty icon.sub - SubTerra level data

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SUB file - IBM Rational Rose component package file

What is sub file? How to open sub files?

File type specification:

Various data file type icon Various data file type

The SUB file extension is also used for component packages in IBM Rational Rose software. The IBM Rational Rose platform is used to integrate legacy integrated development environments or languages.

The default software associated to sub file type:

Rational Rose Developer for Java picture or screenshot

IBM logoRational Rose Developer for Java  Multiplatform software

Company or developer:

IBM Rational Rose Developer for Java is classic Universal Modeling Language (UML).

Help how to open:

This file type is not meant to be opened directly, there is no software that could open and work with it directly, or there is no information available in public sources about opening this file type. This is usually the case of some internal data files, caches, temporary files etc.

How to convert:


List of recommended software applications associated to the .sub 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 sub file, edit sub file, convert sub file, view sub file, play sub file etc. (if exist software for corresponding action in's database).

  • Others sub file

Unspecified and all other actions for computer programs working with sub file - IBM Rational Rose component package file

Click on the software link for more information about Rational Rose Developer for Java. Rational Rose Developer for Java uses sub file type for its internal purposes and/or also by different way than common edit or open file actions (eg. to install/execute/support an application itself, to store application or user data, configure program etc.).

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