[mihaip]

https://www.pcjs.org/ is a similar project on the PC side.

The Internet Archive also has some collections: https://archive.org/details/classicpcgames and https://archive.org/details/softwarelibrary_msdos_games

[Maakuth]

One cool feature of Infinite Mac is missing from these, unfortunately. That is the clever virtual disk system and block by block fetching of the images over HTTP that allows for practically instant execution. Most people have internet connections that are at least as fast or even faster than the HDDs of 90s computers, so reading a remote disk allows for emulation that has no slower I/O than the real machines had.