Directory Opus looks like a file manager, so you might want to look at the options available on Linux. If you're not fixed on one desktop environment, it's worth checking several as they all have slightly different ideas. I can see Directory Opus has various other minor features, you'll find many if them already included in existing file managers, but if something's missing, you could request it, then you're in the position the meme talks about.

Not sure why you'd want to run it on linux, but it seems like it works in wine. You could probably get it going with winboat too