+Hi there. This is Fisheye.
+There have been a couple generations of GUIs for yt. The first one was called
+"Reason" and depended on wxPython. wxPython was relatively easy to install on
+most systems, but it was (and still is!) kind of a pain to program for. It's
+still included with yt, but it's mostly bitrot and I'm not sure it's functional
+anymore. It did some neat things -- you could draw spheres and make histograms
+from those spheres, and you could link plots and drag them around and whatnot.
+What actually ended up killing Reason was the fact that I just never used it.
+It was heavyweight, and I didn't really want to use it.
+The second generation never really made it off the ground -- I wrote about 50%
+of a "Reason v2" that was based on wxPython *or* Qt, and used Traits by
+Enthought as a backend. It was nice, but using Traits in just a GUI setting as
+opposed to threading the entire code (something I wasn't willing to do) made it
+a bit of an awkward solution. Still, it was able to use VTK for isocontours
+and cutting planes, which was nice. The 2D plotting never really came up to
+Then, I made a couple tiny GUIs. These will probably persist -- they're either
+Traits-based (like the Chaco GUI that presents a Google Maps style interface to
+the data) or GLUT-based (like the various small volume renderers and grid
+browsers and image viewers.)
+At the Enzo Workshop in 2010, Tom suggested I try to replicate the Jacques GUI
+in Python. We looked at FLTK first, but I couldn't get it to compile, and the
+Python bindings were a little out of date. But, Tkinter comes with Python! It
+doesn't always build, particularly if the Tk library isn't on the system, but
+Fisheye will be very simple. It'll do small bits and pieces, it'll be very
+stateful, and it'll try to keep it all short and sweet. And maybe someday
+it'll be killed by Reason, when Reason can be written to have fewer
+dependencies and be more maintainable.
+For now we'll develop it outside the yt repo, so feel free to fork the
+repository and make changes and make pull requests.