sn is a small news system for sites which serve perhaps a few dozen newsgroups, and which have a slow connection to the Internet. The target user is a home or SOHO with a single modem connection to the Internet and serving a few workstations. sn also includes a mail-to-news filter.
Information regarding Project Releases and Project Resources. Note that the information here is a quote from Freecode.com page, and the downloads themselves may not be hosted on OSDN.