While "AutoCAD Plant 3D 2009" is often searched for, there was actually no official version by that specific name. AutoCAD Plant 3D was first introduced as a new product on September 9, 2009, but it was launched under the version name AutoCAD Plant 3D 2010. Version History & Naming

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3. OpenPlant Modeler (Bentley Systems)

4. Isometric Drawing Generation

One of the most time-saving features for the 2009 version was the automated generation of piping isometrics. The software could extract 3D piping routes and automatically convert them into dimensioned, annotated 2D isometric drawings, complete with Bills of Materials (BOMs), saving countless hours of manual drafting.