Filter Wiz PRO

Filter Wiz PRO screenshots

Filter Wiz PRO provides eSketch-like simulation of the filter design
Filter Wiz PRO 1.0 : Main window

Alternative downloads

eSketch
3.01
Saves previous traces to view up to 13 voltages or currents at once.
Coilcraft Filter Designer
4.1.0
FREE
Coilcraft is a program that allows you to create elliptic low pass filters.
SoftCell Filter Design
2.5
FREE
A simple means to design filters for RSPs and TSPs.