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.
TempoPerfect Metronome - TempoPerfect is a free software metronome.
Mobile Metronome - Mobile Metronome is a pretty complete metronome for any usage, from the simplest beat count...
Fine Tuner - Fine Tuner is a minimalistic guitar tuner that utilizes your device's built-in microphone.
afractal Metronome - Highly perfomant, easy to use, minimalistic digital metronome desktop app.