Artline - Free downloads of GEM Artline (and Artline 2), first worldwide full-featured illustration application for IBM PCs. Released in 1988, it had full Bézier support, fully scaleable vector-fonts, PostScript support.
GEM Workshop - Part of the large Owen Rudge site: downloads (GEM Download Manager for Windows, drivers), links, history, information, screenshots.
Intel GEM - 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.
Shane Land OpenGEM - The online home of Shane Martin Coughlan. Downloads the OpenGEM distribution of GEM. Also author's projects, presonal info., C.V., photos, weblog.