Dynagraph for Grappa
Visit the official Dynagraph for Grappa web site at http://dynagraph.org/dggrappa.
Dynagraph for Grappa - dggrappa - is a Java front-end to the Dynagraph layout engines. You can use it as a graph editor, or you can pipe text commands (in our incrface language) into it to watch the transformation of a graph that is the output of another process.
Sources are available from dynagraph.org.
Dynagraph for Grappa is licensed under the Common Public License.