TempoPerfect Metronome - TempoPerfect is a free software 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.
Metronomus - Powerful and beautiful online metronome
Fine Tuner - Fine Tuner is a minimalistic guitar tuner that utilizes your device's built-in microphone.
PC 9 Virtual Metronome - Improve your timing with a high precision metronome.
Bounce Metronome Pro - Professional musicians are amazed by Bounce Metronome's advanced rhythm capabilities.