The price is the biggest difference.
Whether you’re using Carlson Survey or Takeoff on the IntelliCAD or embedded AutoCAD (OEM) platform, the Survey and Takeoff functionality will be identical. Any differences are going to be strictly limited to the underlying engine – IntelliCAD or embedded AutoCAD.
- From a feature and functionality standpoint, IntelliCAD will be closer to a full AutoCAD and embedded AutoCAD (OEM) will be closer to an AutoCAD LT.
- IntelliCAD is generic version of AutoCAD and tracks closer to a 4-5 year old version of AutoCAD. See this FAQ comparing IntelliCAD and AutoCAD
- Embedded AutoCAD (OEM) will look more like today’s AutoCAD and may have more of the current bells and whistles – but it’ll also be missing some key functionality such as the ability to create aliases (command shortcuts) and load LISP routines. See this FAQ comparing embedded AutoCAD (OEM) and AutoCAD
It’s a work in progress but you can check out this FAQ where I’m starting a list of the differences between the two programs.