Zabbix - Track, record, alert and visualize performance and availability of IT resources
Whitespace - A Library to help in the cleanup of bogus whitespaces in sources.
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.
Ucraft - Ucraft is a drag and drop based website builder tool.
Prometheus - An open-source systems monitoring and alerting toolkit.
Sertifier - Best way to send smart certificates & open badges!