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.
GB Studio - A free and easy to use game creator for the GameBoy
Platypus - Realtime server monitoring and reporting
HugoBot - An integrated scratchpad for PHP
Nagios - Complete monitoring and alerting for servers, switches, applications, and services
OpenEmu - Console and Arcade video game emulator for macOS.