TS-UGOS E1

TS-UGOS E1 (or simply just TS-UGOS before 1986) is a graphical operating system developed and released by Theorysonic. It was released in 1985.

History
The beta version was released in October 1984.

New features

 * Theorynet web browser.
 * Redesigned user interface into 16-bit color look.