Zabbix - Track, record, alert and visualize performance and availability of IT resources
Youtube-DJ - Mix YouTube songs together
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.
Pacemaker - Create and share mixtapes with friends
Prometheus - An open-source systems monitoring and alerting toolkit.
PlayDeck - A DJ Player in browser 🎶