Old/obscure/niche operating systems that people would actually use Bible software on if it existed?

I've been rolling around in my head the idea of making Bible study software for DOS-family operating systems, since I wasn't able to find any decent Bible software for DOS last time I looked, and I believe some people may still be stuck using DOS for whatever reason, or might prefer to use DOS for some tasks. I don't have any concrete evidence that this user group actually exists though (I think I saw one person on IRC chat trying to install Linux on a system that was running DOS, that's about it), so I don't know if this would be a waste of time, and I can't motivate myself to try to do it unless I know it won't be a waste of time

Would anyone here use, or know anyone who would use, Bible software for an old, obscure, or niche OS if it existed? DOS, Windows 1.x/2.x/3.x/95/98, OS/2 Warp, old variations of UNIX, Visopsys, pre-OSX Apple system software, etc. are the operating systems I have in mind, I'd be willing to look into others too though. Maybe if someone would use something like this if it existed, was readily available, and had a decent feature set and set of translations and books, I could muster the motivation to actually make it.

Most of the "basically usable" older versions of Windows (XP and higher) already have good Bible software available for them. 2000 and lower might not be so usable, but I think theWord (or at least older versions of it) might be able to be used even as far back as 95. The option for older non-x86 Windows NT are probably slimmer, but that's probably even deeper into "tech nerd" territory than OS/2...