Following on from last months JP-08 editor, Momo has released a MIDI editor for the Roland Boutique JX-03 synth. It is available as VST and Standalone for PC 32/64 Bit and as VST, AU and Standalone for Macs. Here's a list of features in the words of the developer:
Pricing and Availability:
It looks kinda like SMR but it is definitely not!