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.
Fine Tuner - Fine Tuner is a minimalistic guitar tuner that utilizes your device's built-in microphone.
Metronomus - Powerful and beautiful online metronome
TapNTune - TapNTune is a fully functional application that can help users tune their instruments with ease, and users can use it on their Mac system.
Metronome M1 - Simple but extremely accurate metronome for mobile.
The Snail - Advanced instrument tuner and audio analyzer