Zabbix - Track, record, alert and visualize performance and availability of IT resources
IcoFX - IcoFX is an all-in-one solution for icon creation, extraction and editing.
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.
IconsExtract - Extract icons and cursors stored in EXE, DLL, OCX, CPL files
Prometheus - An open-source systems monitoring and alerting toolkit.
JDraw - Open Source SF.net