This program designed to assist in visual tuning a guitar with a microphone connected to PC's sound card.

AKoff Guitar Assistant
designed to assist in visual tuning a guitar
with microphone or an electrical guitar connected to PCs sound card.
It analyzes in real time a stream of audio signals from WAVE input of your
sound card
and calculates the main frequency. This frequency is shown by a pointer on
graphic
guitar signature stamp (frets), comparing it to the proper frequency.
Tuning a string now simply means centering the pointer on the appropriate
graphic fret.