Grafeo is a nice Morphic graph editing toolkit by Eiichiro Ito. It forms the basis for Fluo. https://vimeo.com/80749341
I've updated it for Pharo 5. I had to copy it to StephanEggermont/Documentation, as oohito/Fluo is not writable. Stephan Name: Grafeo-StephanEggermont.64 Author: StephanEggermont Time: 30 September 2015, 9:51:53.670434 am UUID: 5dc871e7-c1ea-4098-95c2-6c5741548ecb Ancestors: Grafeo-EiichiroIto.63 Changes for Pharo 5.0 Replaced deprecated menu methods Fixed one error message