Best Bandstop Software

	Filter Wiz PRO

 Schematica Software  8

Active filter design software for lowpass, highpass, bandpass and bandstop electronic filters using resistors, capacitors and op amps. Provides Butterworth, Chebyshev, Elliptic and Bessel Approximations to order 20, with a variety of circuit choices.

	SignalLab .NET

 Mitov Software  2

The SignalLab is a set of .NET 2.0 components for fast Digital Signal Processing (DSP) and data visualization. They allow fast complex signal manipulations with zero lines of program code. Free for non-commercial use.