Datadog - See metrics from all of your apps, tools & services in one place with Datadog's cloud monitoring as a service solution. Try it for free.
Uberchord Guitar - Get better on your guitar. Fast.
AppDynamics - Get real-time insight from your apps using Application Performance Management—how they’re being used, how they’re performing, where they need help.
Fretello - Duolingo for learning how to play guitar
Zabbix - Track, record, alert and visualize performance and availability of IT resources
Justin Guitar - Over 750 completely free guitar lessons!