any dwg to dwf converter is a batch converter that allows you to convert dwg to dwf, dxf to dwf without the need of autocad.
key features:
1. stand-alone
utility - autocad not required.
2. convert dwg and dxf to dwf in batches.
3. supports every version of dwg/dxf
files (supports r2.5/2.6, r9, r10, r12, r13, r14, r2000/2002, r2004/2005, ... formats)
4. versatile and customizable output.
5. dwf 6 support.
6. command line support.
7. very easy to use.