As of Jan 2009, this project and NanoStack 1.x are no longer being actively developed or maintained. Instead there is an effort to add support for Sensinode/cc2430 hardware for the Contiki OS. http://www.sics.se/contiki/
Open source project that offer summary and download services on this page is a project that carry out their development work on other open source development sites. Their work is linked to this page via a feature called OFI, and their work is not carried out here on OSDN site.