Anthony Stiff Associates is now BIM Capable
After much soul searching and many demos, we have decided to swap platform for our main drawing software to Vectorworks. This will enable us to design more efficiently in 2 and 3D, including specialist planting design features. It will enable us to collaborate and exchange information with clients and other consultants within a BIM environment using IFC (Industry Foundation Class) or COBie (Construction Operations Building Information Exchange) formats.
‘Vectorworks puts Building Information Modeling at the heart of the design process, empowering you to stay creative across your workflows’.
http://www.thenbs.com/topics/BIM/articles/bim-levels-explained.asp
See the above link to have BIM Levels explained
Also Check out the NBS Toolkit!
