From the ixi about page:
ixi audio is an experimental project concerned with the creation of digital musical instruments and environments for generative music. We are interested in the computer as a workshop for building non-conventional tools for musicians, i.e. not trying to imitate or copy the tools that we know from the world of acoustic instruments or studio technology. We currently work with open source software such as SuperCollider, ChucK and Pure Data, but our aim is to distribute our applications packaged in a way that allows everybody to use them. Simplicity and ease of use together with depth in interaction and expressive scope is the aim of our experimental music software.
ixiQuarks is a software environment designed for live improvisation that allows for user interaction on hardware, GUI and code level. The environment enables innumerable setups with flexible loading of tools and instruments.
The ixiQuarks consist of different types of tools basic utilities, instruments, effects, filters, spectral effects and generators. Detailed information on ixiQuarks is available here.
ixiQuarks is available for Mac and be downloaded free of cost here. You may want to check some of ixi audio’s other applications like Slicer, grainBox and polyMachine as well (some of these are available for Windows PC).
Visit ixi audio for more information.