This is an editor for Mutable Instrument's Shruthi-1 DIY synth.
It is in version 1.0.0:
Supports all the synth parameters and all the Shruthi-1 filter boards as of Shruthi-1 firmware 0.97
It is available as a Max 6 project and a standalone application for MacOSX.
The tool is open source and all Max patchers are available from GitHub.