“The WebSE is a homage to the most innovative system in computer history. The official release date for System 7.0 was April 1991 in the US and June 1991 in Europe. To celebrate the 20th anniversary of the Macintosh computer, we published the Web SE on-line. This Internet version is not ROM-based and only a graphic replica of the original Apple Macintosh system version 7.0. The WebSE offers a simulation of System 7 on a Mac SE-natural 1 Bit display, with some extensions and some limitations,” Oliver Soehlke & Lukas Pajonczek write for MyOldMac.net.
Test drive Mac System 7.0 (click the “Test Drive a Macintosh” link, Flash required) here.