Geologynet was originally created in the mid 1990's...lots of information has been added since then. We now have over 2000 links to geology related software, information and products. The original software is still available, having undergone many updates. My flagship product, Winrock contains a great deal of original code developed by myself to classify and analyze a variety of rocktypes. Source: http://www.geologynet.com/otherinfo.htm