The Cornell Web Lab Collaboration Server is a suite of tools and services for GUI-based extraction, analysis and sharing of archived web data. See http://weblab.infosci.cornell.edu/ and http://www.cs.cornell.edu/~weigel for details about the project.
Graphl is a generic graph visualization and manipulation tool written in Java. Graphl reads and writes RDF files, visualizes them in a flexible and customizeable way and allows users to edit them intuitively. Please see project homepage for more info...