FreakUSB is an open source embedded USB device protocol stack. Updates to this project have been moved to http://www.freaklabs.org due to slow access from Japan. Apologies if this causes any problems.
Using the new C# Dll from swig portability of Openobex/ObexFtp to write a nice GUI able to transfer file between two devices with obex protocol. More Info’s here: http://cs-obexftp.wiki.sourceforge.net/