So, here's the deal. The reason why I asked is, I find the aesthetic of diskmags, complete with the whole thing of getting a disk in the mail, pretty neat, and was wondering what platform would be best.
Clearly, that'd be Mac OS.
Since I asked this, though, I learned of a project to do a HyperCard zine: https://crime.team/~hypercard/
So I guess I'll just point people to that? I don't want to step on anyone's toes (and I'm not able to do anything for Amiga, and a Palm OS diskmag doesn't make sense).
TBH I'll probably do the thing anyways, and just ignore what I found.
Which means it'd probably be on the (8-bit) Apple II or the (8088-based) IBM PC, the platforms that I'd say I'm most familiar with.
(Well, OK, I'm more familiar with later eras of IBM PC, but I'm currently more immersed in XT-era hardware. And if it runs on an XT and doesn't do something stupid or insanely awesome (see 8088 MPH), it'll run on basically anything newer.)