Is there a proper full list without needing to download the very big ZIP archive file?
I don't know if it includes "every operating system I can think of". I can think of some things: TempleOS, BTRON (there might be more than one implementation; I know of an (apparently) abandoned FOSS implementation), Serenity OS, and some others that I do not remember what they are called.
Also, what might be useful for preservation is, in addition to the files and emulation, also the documentation for programming those operating systems. There would also be such a thing of consideration as documentation of old computers (including their instruction sets), which might be a separate project but potentially might be useful in combination with this.
Another thing would be somehow you can download individual systems together with information about the emulation, in case you want to use your own emulators for it instead of installing an existing collection with its own installers and launchers etc.
Some people mention uncommon features (and features that work in an unusual way). I think that would be worth making a article about too, and just because a feature is common does not necessarily make it good.
I don't know if it includes "every operating system I can think of". I can think of some things: TempleOS, BTRON (there might be more than one implementation; I know of an (apparently) abandoned FOSS implementation), Serenity OS, and some others that I do not remember what they are called.
Also, what might be useful for preservation is, in addition to the files and emulation, also the documentation for programming those operating systems. There would also be such a thing of consideration as documentation of old computers (including their instruction sets), which might be a separate project but potentially might be useful in combination with this.
Another thing would be somehow you can download individual systems together with information about the emulation, in case you want to use your own emulators for it instead of installing an existing collection with its own installers and launchers etc.
Some people mention uncommon features (and features that work in an unusual way). I think that would be worth making a article about too, and just because a feature is common does not necessarily make it good.