Metronomus - Powerful and beautiful online metronome
MyGuitarTuner.com - Online microphone tuner for guitar, ukulele, violin and other instruments. Tune by ear or using the microphone of your device. It's fast and accurate algorithm makes it one of the best online microphone tuners available.
afractal Metronome - Highly perfomant, easy to use, minimalistic digital metronome desktop app.
TempoPerfect Metronome - TempoPerfect is a free software metronome.
LINGOT - Musical instrument tuner, LINGOT is a musical instrument tuner.
Open Metronome - Open Metronome, a Free Open Source Metronome for Windows Mobile and Pocket PC.