Over the last little while, a few of us have been working to update and improve the GUI for yt, "Reason."
These changes were pushed into the main repository this morning. They include a visual refresh, a smaller footprint on disk, and a 3D scene based on XTK. (The camera path editor in the 3D scene is still awaiting some fixes, but the concept is working.) I'd encourage you, if you're on the development branch of yt, to update and give it a shot:
yt update yt serve
Any feedback you have would be appreciated. We're going to be pushing for a stable release in the near future.
PS This and a few other things, such as a revised plotting mechanism, were the product of a sprint we had last weekend. The summary is here: