>From the site: Cytoscape is a bioinformatics
software platform for visualizing molecular
interaction networks and integrating these interactions
with gene expression profiles and other state data.
Additional features are available as plugins.
Plugins are available for network and molecular
profiling analyses, new layouts, additional
file format support and connection with databases.
Plugins may be developed using the Cytoscape open
Java software architecture by anyone and plugin
community development is encouraged.