Want to play at Semantic Web?
The .Net RDF parser that drives SchemaWeb is now available under a Creative Commons Attribution-ShareAlike license.
VicSoft.Rdf Parser binaries, source and documentation are at:
http://www.schemaweb.info/parser/Parser.aspx
This lightweight smush and query software component was developed on Windows. However it should run with Mono for those who work on the sunny side although this is un-tested.