Google Groups - Google Groups allows you to create and participate in online forums and email-based groups with a rich experience for community conversations.
Zabbix - Track, record, alert and visualize performance and availability of IT resources
DownToMeet - DownToMeet is a platform to organize, find, and attend group events.
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.
Mighty Networks - Mighty Networks enables entrepreneurs, organizations, and companies to create and grow a community-powered brand.
Prometheus - An open-source systems monitoring and alerting toolkit.