Rox its an open source framework for building Graph-based applications. It has been built essentially for academic jobs, such as graph algorithm execution and theorem proofs.

Download it now !

This project its split in two main cores: The Graph API, that have been developed to provide to users the ability to work with graphs without necessarily a graphical user interface. And the Graphical User Interface, based on Eclipse RCP, that provides the ability to either edit graphs trough a specific editor for Graph files and execute algorithms.

Main Features

• Extensible Graph API
• Supports Simple Graphs, Directed Graphs, Trees, MultiGraphs, PseudoGraphs, and what kind of graph you want (just extend!)
• Supports algorithm execution
• Easy-to-use graphical interface

How does it works?

...and what it has that make it different from the others

The whole software is plugin-based, what means that everything you do (like new algorithms implementations or new node types) can be shared among other users and/or be attached to the main stream version of the framework. This portal, indeed, was built for that purpose, to be a information exchange site on graph theory algorithms and its applications.
The RoxGT its basically a set of eclipse plugins that can be used together so you will not worry about to create and (most important) to validate the whole graph structure to model your specific problem.