Zabbix - Track, record, alert and visualize performance and availability of IT resources
RetroArch - RetroArch is a frontend for emulators, game engines and media players.
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.
Batocera.linux - Batocera.linux is an open-source and completely free retro-gaming distribution that can be copied to a USB stick or an SD card with the aim of turning any computer/nano computer into a gaming console during a game or permanently.
Prometheus - An open-source systems monitoring and alerting toolkit.
Playnite - Source code generated using layoutit.com