Software by Cadro Pty Ltd:

Draw a pattern from scratch, open any existing pattern file or import DXF or HPGL. Add or delete elements. Zoom/pan. Arrange repeats along any two axes. Snap to optional grid. Add layers to form multi-spaced patterns. Rescale. Transform. Customize. Save to your system's hatch file format - AutoCAD, AutoCAD LT, Revit, IntelliCAD, Chief Architect, DataCAD, General CADD, MegaCAD, MicroStation V8, TurboCAD, VersaCAD, SolidWorks and other formats ...