SWED: "The Semantic Web Environmental Directory (SWED) is a prototype of a new kind of directory of environmental organisations and projects. Our goal is to develop a sustainable (realistically maintainable) and easy to use directory about environmental organisations and projects throughout the UK.

How is SWED different? - Rather than centralising the storage, management and ownership of the information, in SWED the organisations and projects themselves hold and maintain their own information. The information is published on their web sites. SWED simply 'harvests' that information and uses it to create the directory." (from the SWED home page)

This is the RDF based portal that is a result from the european part of the w3c. It is made available as open source software and uses Jena for RDF and OWL management.

The semantic blog mentioned in Steve Cayzer's paper in the last posting is available for demo and download.

Another good GForge source for open source software for the semantic web is semwebcentral