This is an editor for Mutable Instrument’s Shruthi-1 DIY synth. It is in version 1.0.0. It 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.