monitoring is missing a few companies

[eedgar]

nagios
zenoss

[schoefmann]

Thanks for your input @eedgar.
We try to focus on products/tools that either target programmable infra directly, or are a very common choice in that area.
Especially in the monitoring space, there are dozens of products we could potentially list (all the nagios forks, zabbix, munin, cacti etc.).
To keep the list useful for readers, we should only list tools if they have special support for e.g. Container integration or service discovery mechanisms.
If nagios/zenoss provide that (e.g. by means of extensions or plugins), you are invited to provide a pull request for a tech article.