G-tune   
by JHC Software Limited   

The most advanced instrument tuner on the PC just got better!
Throughout the world, G-tune has gained an enviable reputation as the most accurate, and advanced instrument tuner available on the PC. As a result, it is widely used by novices, hobbyists, and professionals alike. From students learning how to play violin, to corporations and small businesses creating unique and beautiful musical instruments, G-tune has become an indispensable tool.
G-tune automatically measures the pitch of your instrument using a unique high-accuracy algorithm (0.01Hz measurement resolution from 15Hz to 5500Hz, better than 0.1cents accuracy). Use G-tune’s frequency meter, oscilloscope and realtime spectrum analyser to correctly set-up electric guitars, to tune acoustic instruments, and to train your singing voice. Fast, accurate and easy-to-use, G-tune runs under Windows98/NT/2000/XP with any windows-compatible sound card. It’s the must-have accessory for professional and amateur musicians.
Version 2.50 includes many exciting features including a Strobe-tuner, real-time Pitch-to-MIDI, real-time graphical pitch display and calibration of input devices.