STEP ToyBox: EXPRESS Schema Diff Tool

This is a tool which reads two EXPRESS schema files, compares them, and reports the differences. This tool works best if the two files hold different versions of the same schema.

Source Code: browse GIT repository

Download: expdiff 1.0

Known Limitations

Building from Source

This tool can be build using SBCL.

  1. git clone git://
  2. cd step-toybox/apps/
  3. git clone git://
  4. cd expdiff
  5. sbcl --load deliver

You should now find a expdiff file in the current directory.

Craig Lanning