It's not just me as you can see here.

Nobody says that the word is owned by a franchise but as you see, especially with the "3D" and the fact that the franchise is trending, it causes confusion.

Well, the timing is bad since the dune3d software was initially named only 7 months ago [1] (after the first new Dune movie), and just last month the second new Dune movie came out.

1: https://github.com/dune3d/dune3d/commit/3d17bc57e07ea39a7b89...

Yeah but in all those cases, it's clear from the context that they are distinct from coffee, snakes, and oxidation.

"Snake 3d" would be more analogous here. Sure snake means something outside of computing, but it's also a famous piece of computing history (like Dune II) for which "3d" also makes sense as a suffix.

Yes they do, and they are unfortunate as we can see here many times over and in this case it is a currently popular franchise which also had some games and this thing which has neither something to do with the franchise, nor with a game or with sand dunes falls into the same pattern.

I doubt anybody would care if they'd named it after some coffee sort or a snake, where nothing of the above applies. There are not many Café games, for example.

You are joking? Maybe you never read them. The planet Arrakis is a desert planet central to the novels. Lots of sand dunes, nothing else planet wide.