Simutrans
Official site. A free economic and transport simulation for Linux, BeOS, or Windows.
Simutrans Centre
Development news, references and config tool SimuConfig.
Simutrans Unlimited Project - North America
Information, instructions, downloads, and development center including bug list.
Simutrans Websites Ring
Sites with information about Simutrans.
The Nameless Place - Simutrans
Fan site with description of play.
World of Simutrans
Fan site with instructions, tips, and downloads.
Yahoo! Groups : Simutrans
Archive of several years of hundreds of monthly messages.