Just to summarise what we should be looking at (IMHO):
Alain Plantec's Miro http://www.squeaksource.com/Miro/ Juan Vuletich http://www.jvuletich.org/Morphic3/TheFutureOfTheGUI_01.html (the site appears to be suffering from entropy...) Sig's OpenGL canvas (can be Googled, will let Sig let us know...) The SqueakGTK project http://wiki.squeak.org/squeak/6043 (older: http://www.squeaksource.com/Gtk/) Areithfa Ffenestri http://wiki.squeak.org/squeak/3862
The dev thread on "menu standards" http://lists.squeakfoundation.org/pipermail/squeak-dev/2008-April/127706.htm l (is "underthreaded" as I like to consider things, so not too visible on web-based-thread feeds)
Worth a look at the dev thread on SeasideXUL too... http://lists.squeakfoundation.org/pipermail/squeak-dev/2008-April/127757.htm l
Any omissions (have probably forgot one or two myself) welcome to be added...
Regards, Gary.