You may already be familiar with Aaron Hexamer's FRA4PicoScope tool, which allows users to generate a Bode plot of signal gain and phase. Now Wim Huyghe has created an LCR impedance viewer to use alongside it.
Wim's app makes it easy to compare several Bode plots in the same view. Read more, and download the app, in his post on the EEVblog forums. Please note that Pico Technology does not accept any responsibility for the content of third party websites.