Operating Systems History - http://www.cs.gordon.edu/courses/cs322/lectures/history.html A Brief History of Computer Operating Systems from the mid 1950s on.
OldOs.org - http://www.oldos.org/ Resource for utilities, history, and much needed to get many old computers up and running, physically or in emulation.
History of the AmigaOS GUI - http://www.gregdonner.org/workbench/ Dedicated to the preservation and restoration of the Amiga Workbench's history.
Easysoft - http://in.geocities.com/easysoft2002/ Operating systems are defined here. All type of operating systems like windows,unix,linux,debian are defined here.open bsd as well as bsd is described here
GUIdebook - http://www.guidebookgallery.com/ Dedicated to preserving and showcasing Graphical User Interfaces. Includes various images, icons, posters, news items and other related materials.
Help build the largest human-edited
directory on the web.