Xmind - Xmind is a brainstorming and mind mapping application.
Zabbix - Track, record, alert and visualize performance and availability of IT resources
MindMeister - Create, share and collaboratively work on mind maps with MindMeister, the leading online mind mapping software. Includes apps for iPhone, iPad and Android.
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.
FeatureMap - FeatureMap story mapping, simple and effective realtime collaboration and collective intelligence tool.
Prometheus - An open-source systems monitoring and alerting toolkit.