For a 100-300 developer company running macs, I don’t think the current “free” alternatives would be less expensive than paying for Docker Desktop. I managed wrappers around Vagrant when Airbnb was that size and boy howdy did the whole org pay for every bit of the quality difference between Virtualbox+Vagrant and the Docker Desktop of today. I would rather buy a reliable GUI for fiddling and resetting the VM, wrangling file shares etc over implementing it myself. Maybe Colima will get much better but today doesn’t seem like a good choice unless you’re at 500+ devs and want to spend Dev Infra headcount polishing it up & supporting it.