Moogli (a sister project of MOOSE) is a simulator independent openGL based visualization tool for neural simulations. Moogli can visualize morphology of single/multiple neurons or network of neurons, and can also visualize activity (time series) in these cells.
For details regarding installation and usage see ‘help’ folder
Homepage: http://moose.ncbs.res.in/moogli
This software is available under GNU GPL (3 or later)