The Virtual OS Museum lets you relive over 600 operating systems right on your desktop

The Virtual OS Museum provides access to 600 operating systems across 250 platforms via emulation. Andrew Warkentin compiled the collection since 2003 starting from 1948's Manchester Baby. The full zipped library is 127GB and the Lite edition is 14GB. Users can run systems like Windows 95 and DOS variants with minimal bundled software.