Ссылочки на GEM-ресурсы.

[yamaday]

http://www.seasip.info/Gem/index.html
http://www.deltasoft.com/
http://aranym.sourceforge.net/
https://en.wikipedia.org/wiki/OpenGEM
https://en.wikipedia.org/wiki/FreeGEM
http://www.owenrudge.net/GEM/
http://www.retroarchive.org/cpm/archive/unofficial/gemworld.html
http://pcgem.iwarp.com/
http://toastytech.com/guis/indexgem.html
http://www.retrotechnology.com/dri/GEM.html
http://www.landley.net/history/mirror/cpm/gem.html
http://www.digibarn.com/collections/software/gem/
http://www.joewein.de/dri.html