This is something you could easily see for yourself, so this is certainly a rhetorical question.

To which I’ll respond: the world doesn’t owe it to you to make all software usable on your operating system of choice. There’s no freedom in that.

I'm quite happy with irssi, just figured it was worth checking. Lots of stuff becomes free software if it sticks around long enough. Blender is a big one that was originally proprietary, I believe. I did check Wikipedia before posting and "get my answer", but I also considered that it could be out-of-date, or that there could be something in the works that the loyal users would know about, maybe a blog post about plans to liberate it in the future. Asking here seemed like a surefire way to double-check, but admittedly the answer was not that important or relevant to me, yeah.