DigiBarn Software: Digital Research Incorporated's GEM
GEM (desktop environment) - Wikipedia
Graphics Environment Manager - Wikipedia
Digital Research GEM Desktop 1.1 - YouTube
File:GEM Desktop.jpg - Wikipedia
GEM is truly truly outrageous on X: "here's a thread where someone got a full GEM desktop running on the Apple Lisa it can even run Atari ST applications https://t.co/6wUiYwyChq https://t.co/v6zZB0uIZS" /
WinWorld: GEM Paint 1.x
GEM, Graphics Environment Manager
DigiBarn Software: Digital Research Incorporated's GEM
Screenshots of Apricot GEM/1
Screenshots of GEM/2
Gem Desktop and Applications – Atari PC | IBM PC Compatible – PCx Series