I really like Syncthing, Nextcloud, Forgejo and Mailcow to collaborate with colleagues.
Kimai allows me to track hours and get paid.
Barrier allows me to use several computers at once.
Xen Orchestra is pretty much on par with VMWare stuff and way cheaper.
What other awesome software does allow you to work more efficiently in a business context and stays out of your way?
That’s good as well, of course. I use QEMU with virt-manager and cockpit on my office workstation running EndeavourOS and it’s glorious. Keeps Windows from ever being installed on the bare metal.
From a usability perspective, though, I think Proxmox lowers the barrier to entry, as the web UI feels considerably more powerful out of the box than cockpit. An interesting bonus is that you can add it to an existing Debian install, including one with a DE, though it’s not something one would want to do in production.
I don't consider proxmox to be enterprise grade though, so I won't touch it.
Care to elaborate?