Tunekit® version 2.0 for Windows.
Filter Tuning Kit for Windows is a electronic filter synthesis program and a practical filter tuning aid for actually designing and building a working filter. TuneKit® is a small window module with some powerful features that include; 

• Chebyshev lowpass and highpass filter synthesis from 2 to 25 poles.
• Narrow bandpass Chebyshev inductive or capacitive coupled filters from 2 to 8 poles.
• Bridged-t notch filters, provides rejection of 60dB or more with practical values of inductor Q, using only 4 components.
• The filter data will be saved in ARRL Radio Designer® 1.0 format for instant analysis of your design. TuneKit® was designed to be used as a front end for ARRL Radio Designer®, there is a "stay on top" Option button for repetitive filter design while using ARRL ARD. (So, now you can design and analysis in seconds). 
• Calculates air core coil windings for a desired inductance.
• Find the actual values of inductors or capacitors to use in your filter's tank circuits, using the resonant frequency calculator and then save the values in the tunekit.ini file for instant recall.
• Fast access to the Window's Calculator, so you don't have to hunt around your desktop.
• "Help Status Bar" for on line help of any control in the module. Just press and hold and the status bar reveals the function.