I'm happy to help!
Especially since your research seems quite important.
I forgot to mention in my last post that I also informed
Theodor Lauppert of your interest.
Also, did I mention that VOGONS is the
official forum of
DOSBox, the most widely used cross-platform DOS emulator (or, more accurately, an emulator of "an Intel x86 PC, complete with sound, graphics, mouse, joystick, modem, etc., necessary for running many old MS-DOS games that simply cannot be run on modern PCs and operating systems, such as Microsoft Windows XP, Windows Vista, Linux and FreeBSD" [
source])?
I don't think I know any "hobbyist" DOS emulators that were written from scratch, but since DOSBox is Open Source, there are numerous
custom builds and a fair share of
frontends that are aimed at making DOSBox more user-friendly for those who don't like using the command prompt.
I have used console emulators in the past, and
this website seems to be a very decent place. I think it only offers legal content, and lots of useful tools in addition to emulators for various systems.
And here's a website about
Amiga emulation:
Lemon Amiga. Another site that may be useful to you is
this database of Amiga games. I haven't used either much, but they seem to be good sources anyway.