List of external resources

Open source users
BRL-CAD

External information about standards that use EXPRESS schemas
i.e. STEP, IFC, etc

WikiSTEP tutorials and detailed information on STEP Application Protocols

Wikipedia article on ISO 10303 STEP

CAx-IF schemas, example CAD models, and recommended practices for STEP CAD implementations buildingSMART IFC and related specifications

Other open source projects related to STEP and/or EXPRESS
Open Source BIM Collective

JSDAI, similar to STEPcode but written in Java. Created by LKSoftWare GmbH.

Free, closed-source programs related to STEP / EXPRESS

 * STEP File Analyzer