Inkscape - Inkscape is a free, open source professional vector graphics editor for Windows, Mac OS X and Linux.
Zabbix - Track, record, alert and visualize performance and availability of IT resources
Sketch - Professional digital design for Mac.
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.
Affinity Designer - Professional creative software, exclusively for Mac.
Prometheus - An open-source systems monitoring and alerting toolkit.