TS-UGOS 2 (codenamed Karzahni) is a graphical operating system developed and released by Theorysonic. It was released on June 1, 1987.


Theorysonic began developing TS-UGOS 2 in December 1985. The operating system and the TheoryDesk UG 2 was released to manufacturing on May 29, 1987 and became available at the 41st Abeta Festival, on June 1, 1987.

New features

  • CD-ROM support
  • Theorynet 2 browser
  • Improved performance


See also