The amazing Archive.org just posted a Mac OS 7 emulator and it’s amazing.  See, “Early Macintosh Emulation Comes to the Archive“. Given my first computer was a “Fat Mac“, seeing this operating system brought to life brought so many memories back.  Thank you archive.org!!  The even support full screen so you can run a 512×342 resolution emulator on a 4k monitor in a browser under Ubuntu ;)