Download of JGraphT 1.3.0 for Mac was available from the developer's website when we last checked. We cannot confirm if there is a free download of this app available. This free Mac application is an intellectual property of Barak Naveh and John V Sichi. The software is included in Design & Photo Tools. Please check the Mac app with an antivirus before launch as it is downloaded from the developer's website, and we cannot ensure that it is safe.
From the developer:
JGraphT is a Java library of graph theory data structures and algorithms. Any object can be used for vertex and edge types, with full type safety via generics. The tool provides algorithms for pathfinding, clique detection, isomorphism detection, coloring, common ancestors, tours, connectivity, matching, cycle detection, partitions, cuts, flows, centrality, spanning, and the list goes on.
You may want to check out more software for Mac, such as Cuadro or Resize Now, which might be related to JGraphT.