I think docker desktop’s bigger value prop is that it’s a well supported zero-effort setup of a VM to run the docker daemon on platforms that don’t support it natively (i.e. MacOS which a lot of programmers use). And it very cleanly handles mounting your local filesystem into containers running in the VM, which is important for dev envs and used to be a source of friction with alternatives (although it seems like the competition has caught up and this also now works out of the box with rancher desktop and others?). Having a GUI is somewhere behind those, though I know folks who have a weird preference for GUIs 🤷‍♀️.

I’m just a guy who uses Linux and spends most of his time in a terminal, so I’m not saying I value docker desktop, and I personally don’t have to deal with any of this so I’m probably behind on how good the alternatives are. Just saying where I see other people get use out of it.

Docker Engine (which is the core of what people think of as “Docker”) is FOSS. Docker Desktop (which most people rely on for local development) is free for individuals but I believe the license says companies over a certain size are required to pay.

And on top of that the paid plans also come with support, which large businesses frequently require, and private repositories on docker’s image repository.

Sqlite isn’t quite one person, but it is a very small team and is extremely widely used. https://www.sqlite.org/mostdeployed.html