I have written a numerical optimizer for LTSpice IV. It automatically adjusts component values to optimize circuit performance objectives you set.
It is best used to optimize 1,2 or 3 component values in an already working circuit. However you can even start from a non-working circuit and find 8,9 or 10 component values that do a good job but that takes longer and it is more difficult to define good objective functions. The optimizer takes all its set-up instructions from text comments you make in the LTSpice schematic which makes it particularly easy to use.
www.evospice.site88.net
EvoSpice 4.1 is free.
It is best used to optimize 1,2 or 3 component values in an already working circuit. However you can even start from a non-working circuit and find 8,9 or 10 component values that do a good job but that takes longer and it is more difficult to define good objective functions. The optimizer takes all its set-up instructions from text comments you make in the LTSpice schematic which makes it particularly easy to use.
www.evospice.site88.net
EvoSpice 4.1 is free.