Fine Tuner - Fine Tuner is a minimalistic guitar tuner that utilizes your device's built-in microphone.
guitarLayers - guitarLayers is a professional macOS guitar learning software.
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.
Gitarrero Beginner - Gitarrero Beginner is a multi-featured, and easy-to-use guitar school developed as a guide to help you learn guitar skills and play them comfortably.
Metronomus - Powerful and beautiful online metronome
Baglama Tuner - Baglama Tuner is a mobile application that baglama enthusiasts can use to tune baglama.