Winterboard - Give your iPhone or iPod Touch a graphical overhaul!
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.
Dreamboard - DreamBoard lets you take control over the homescreen of your jailbroken iPhone.
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.
Springtomize - Tear down the walls
Zabbix - Track, record, alert and visualize performance and availability of IT resources