From Primeware UK:
Incredible new version available. For the first time ever you can buy a heavy-duty CAD program that's compatible with the DWG file format and industry-standard applications without the high price of other industry-standard applications. BitCAD's is the best cost/effectiveness solution to anyone who creates and uses DWG files. BitCAD's native file format is DWG. BitCAD opens, edits, and saves any existing DWG files saved in numerous versions without conversion or data loss. BitCAD provides industry-standard compatibility with the Autodesk AutoCAD command set, as well as programming APIs, such as LISP and SDS (BitCAD's C programming API).You can organize items on layers, snap to items for precise positioning, work in model space and paper space depending on whether you're drawing or printing, and create 2D or 3D models.
Version 6.4.72 features: DWG 2008, New User Interface, Express Tools, Integrated Lisp Editor Layer, and Stats Manager.