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.
Magical World Builder's Guide - Suggestions for creating consistent magic themes for fantasy settings, as well as general world building advice and resources.
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.
World Builder Projects - Starting place for information on how to build an imaginary setting.
World Builders - A website supporting a world building distance education course. Reference material, lessons, downloads, and sample worlds.
World Building - An example of designing a planet, from basic physical assumptions to geography to weather systems and archeological remains.
Worldbuilding - Indexed links reviewed for their relevance to gamemasters. With additional information on conlangs, fantasy names, and fictional religions.