Are there any libraries for parsing AutoCAD files?

Question

Are there any libraries (preferably open-source) for parsing AutoCAD files (DWG or DXF)?

Answer 1

Don't think you will find anything better than DWGdirect. Look here

http://www.opendwg.org/

and specifically here:

http://www.opendesign.com/the_oda_platform/dwgdirect