Want to see the earliest resident monitors? The ancestor of all modern OSes (CTSS)? The earliest versions of Unix? The first OS with a desktop metaphor GUI (Xerox Star Pilot/ViewPoint)? Early versions of mainstream OSes? If you want to explore historical OSes and platforms without having to worry about configuring/installing emulators and OSes or corrupting emulated installations, you’ve come to the right place.

Just about every well-known OS and platform (and also a lot of obscure ones) is included in some form, spanning the entire history of stored-program computing from the Manchester Baby of 1948 (the first stored-program computer) to the present day.

associated blog post

https://andreww591.blogspot.com/2026/05/ive-released-virtual-museum-with-nearly.html?m=1