This is the command botch-graph-difference that can be run in the OnWorks free hosting provider using one of our multiple free online workstations such as Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator
botch-graph-difference - graph diff
botch-graph-difference [options] g.xml h.xml
Find if two GraphML or dot files differ and show the difference.
If the files differ, the exit status is non-zero, otherwise it is zero.
Use botch-graph-difference online using onworks.net services