ExplorViz
Live Trace Visualization for Large Software Landscapes
ExplorViz is a web-based software visualization for large software landscapes.
It features two different perspectives: the landscape-level perspective and the application-level perspective. The former visualizes the systems, nodes, and application existing in the software landscape. The latter one utilizes the city metaphor to visualize the entities and communication happening in one application.
For installation instructions and downloads see http://www.explorviz.net