Criar Mundos - Building Worlds
   A step-by-step guide for creating original settings and incorporating realistic details. Various resources and references. In English and Portuguese.
   http://criarmundos.do.sapo.pt/

Magical World Builder's Guide
   Suggestions for creating consistent magic themes for fantasy settings, as well as general world building advice and resources.
   http://www.web-writer.net/fantasy/

Timeline Generator
   A web-based application that creates generic random events for a nation or region. The user can specify the starting year, number of years, and events per year.
   http://www.fantasist.net/timeline.shtml

World Builders
   A website supporting a world building distance education course. Reference material, lessons, downloads, and sample worlds.
   http://curriculum.calstatela.edu/courses/builders/

World Building
   An example of designing a planet, from basic physical assumptions to geography to weather systems and archeological remains.
   http://www.suite101.com/welcome.cfm/world_building

Worldbuilding
   Indexed links reviewed for their relevance to gamemasters. With additional information on conlangs, fantasy names, and fictional religions.
   http://www.bmarch.atfreeweb.com/Worldbuilding.htm