Fonts of characters (installed or not in Windows) displaying program.

Program that explores, with a given search key, several search engines and know in which number of page is a given url (or text).

Windipoles

Windipoles is a free real time passive filter simulator program developed under Microsoft Visual Studio . NET. It enables design, analysis, optimizations and plots, all graphically. While component values are changed, graphic windows are updated instantly.Graphics may show, overlapped, more than one network for comparing purposes.
More details.