NexusFont - Choose and manage your fonts with Nexus Font.
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.
Font Viewer - Font Viewer is an application which does exactly that - it views fonts!
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.
Font Manager - Simple font management for GTK+ desktop environments
Zabbix - Track, record, alert and visualize performance and availability of IT resources