Thanks for extra publicity, John!
There's a Russian saying that teaches "The more there is of a good man, the better."
I wouldn't call it a "version of Boxplorer" though. It does use fractal shaders whose interface is compatible with Jan Kadlec's (a.k.a. Rrrola) original Mandelbox fragment shader but anyone proficient enough in basic GLSL can write shaders that won't have anything to do with Rrrola. This is where all similarity ends.
The viewer itself is a completely different affair and written from scratch following the general trends of a simple GLSL application. It is
Fraxter3D and nothing else, therefore it has its own liberal license and it will lead, so help me God, its own independent life.
There's also a much simpler Demo version published recently on the thinBasic forum. It's shown as it runs under my Sustenance-themed XP Pro Sp3. It runs of course also under Vista up to 8.1:
