Zabbix - Track, record, alert and visualize performance and availability of IT resources
Trivia for Google Chat - Team-building w/ fun quizzes, games right inside Google Chat
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.
Flinkit! - Web-hosted team building games for small and large companies
Prometheus - An open-source systems monitoring and alerting toolkit.
Sorry App - Turn outages into opportunities