Fine Tuner - Fine Tuner is a minimalistic guitar tuner that utilizes your device's built-in microphone.
Pingdom - With website monitoring from Pingdom you will be the first to know when your website is down. No installation required. 30-day free trial.
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.
StatusCake - Website Uptime Monitoring & Alerts – Free Unlimited Downtime Monitoring
Metronomus - Powerful and beautiful online metronome
Better Uptime - We call you when your website goes down