AutoCAD 2009, often internally referred to as "Raptor" during development, marked a major turning point in CAD software design.
Because AutoCAD 2009 is over 15 years old, its official system requirements are extremely modest compared to today's standards. Autocad 2009 Portable -g8ni 92-
This was the first version to adopt the Microsoft Office-style Ribbon, grouping tools into contextual tabs to reduce screen clutter.