Also check out DreamPie [ http://dreampie.sourceforge.net/ ], which is damn good, and has a comparable feature list.
Does anyone know off the top of their head which of these is the most active?
I know a number of people using ipython, but I've never heard of the others before today. Ipython is widely used by the scipy crowd, at the very least.
import ipdb
ipdb.set_trace()