Another IntelliCAD built using the new DRX SDK has surfaced. The DRX SDK is the OpenDesign Alliance’s clone of Autodesk’s ObjectARX SDK. This time it is ZWCAD from China with the new version of their AutoCAD clone known as ZWCAD 2008.
And they even included the DRX SDK along with the software. So if you want to write DRX plug-ins you do not need to join the OpenDesign Alliance to get the DRX SDK.