A while back I remember seeing a tech demo that used this cool GUI library. It had a simple side panel where you could adjust parameters by clicking/dragging on the item and it would show a circular control that used the angle of the arc as a way to adjust the parameter. I don't remember what it was called, but it looked really simple and sleek. Would that ring a bell for anyone (sorry for being vague...)?
At any rate, I'm looking for a super simple GUI for writing some samples, ideally one that just has a basic side panel with widgets. Do you guys have any suggestions?