Rational XDE collaboration data
File type: Various data file
A cbx file extension identifies collaboration data used by Rational XDE, IBM's software development and modeling environment.
The cbx file belongs to the Rational XDE project environment rather than serving as a general-purpose document.
File type category:
Various data file
Date updated: October 12, 2026
Rational XDE (eXtended Development Environment) was an IBM development tool for creating software models and managing related development information on Windows, Linux and Unix. Its cbx file extension was used for collaboration data associated with that environment.
A cbx file contains data that Rational XDE uses to support collaboration within a project. The format is now a legacy format associated with the Windows, Linux and Unix editions of Rational XDE.
Open a cbx file with Rational XDE on a compatible Windows, Linux or Unix installation. The file is intended to be used from the Rational XDE project environment, and it may not open as a standalone document.
The cbx file is a proprietary Rational XDE collaboration file, so it cannot generally be converted with a standard file converter.
When the original project is available, use Rational XDE's own project or export features to preserve relevant project information in a supported format. The collaboration data itself may not have a separate conversion option.
Software apps that create cbx files:
Multiplatform
Rational XDE
Software applications that handle other tasks involving cbx files:
Multiplatform
Rational XDE
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