Is there an application that will list internal folders file types in GUI if i select a main folder?

eg.

C:\Picco contains many folders, some contain .asp files and some contain .js files.

(e.g. "C:\Picco\excl" and "C:\Picco\sadf")

Is there something that will allow me to select C:\Picco and it will list all folders with .asp files and all folder with .js files in order?

Something like TreeSize for MS Windows.

Picco