Fractice is a fractal explorer/renderer for Windows. It supports navigation, thumbnails, previews, deep zoom, printing, posters, palettes, multicore and distributed processing, movie recording, undo/redo, job control, VJ mixing, dual-monitor, & MIDI.
I use Fractice for making hi-res deep zoom movies. The distributed processing really works! I had a cluster of up to 25 dual-core PCs rendering my most recent movie. See movies on the home page.