Pathomx is described as 'workflow-based tool for the analysd visualisation of experimental data. Initially created as a tool for metabolomic data analysis is has been extended and can now be used for any scientific and non-scientific data analysis' and is an app in the Education & Reference category. There are four alternatives to Pathomx for a variety of platforms, including Mac, Windows, Linux, iPad and Online / Web-based. The best alternative is GraphPad Prism. It's not free, so if you're looking for a free alternative, you could try Cytoscape or Prefuse.
GraphPad Prism is a powerful combination of basic biostatistics, curve fitting and scientific graphing in one comprehensive program. More than 100,000 scientists in over 100 countries rely on Prism to analyze, graph and present their scientific data.
Cytoscape is an open source software platform for visualizing complex networks and integrating these with any type of attribute data. A lot of plugins are available for various kinds of problem domains, including bioinformatics, social network analysis, and semantic web.