New York composer Nick Didkovsky and I have created a microtonal music editor for Max and Max for Live based on JMSL and MaxScore. You can notate up to 72TET and have unlimited precision playback via a tailor-made sampler and/or sound font player. There is built-in support for nTET and JI. Every note can have a pitch or Hz label. Support for the Helmholtz-Ellis font is on our to-do list. The editor is also capable of graphical notation via the Picster graphics tool.
We're looking for beta testers who would like to test-drive it. Check it out at http://www.georghajdu.de/computermusicnotation/wopre/.
Georg Hajdu