GEM stands for Graphical Environment Manager, a windowing environment created by Digital Research, the same firm known for creating DR-DOS. Runs on DOS (16- & 32-bit Intel x86), and on 16-bit Atari ST/STE/TT (Motorola 680x0). Now licensed under the GPL.
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Sites that promote use and development of PC/GEM: can be anything from gaming to programming.
PC GEM and GEM documentation, downloads, links, news, screenshots, developer information.
Part of the large Owen Rudge site: downloads (GEM Download Manager for Windows, drivers), links, history, information, screenshots.
Graphical environment for IBM PC and Atari ST. PC GEM was a fairly widely used GUI until the release of Windows 3.0. Now licensed under the GPL.
MAD - My Atari Derived Library
Article. Casting GEMs before PC-users.
Yahoo Groups: gem-announce
Announcement list for GEM and the FreeGEM project.