Simutrans

Simutrans Centre - http://simucentre.coolfreepage.com/
Development news, references and config tool SimuConfig.

Simutrans Unlimited Project - North America - http://svamcentral.org/simu/
Information, instructions, downloads, and development center including bug list.

Simutrans Websites Ring - http://o.webring.com/hub?ring=simutransring
Sites with information about Simutrans.

Simutrans-Tips.com - http://www.simutrans-tips.com/en/
Tutorials, tips, links, and downloads.

World of Simutrans - http://www.simutrans-graphics.9cy.com/intro-eng.htm
Fan site with instructions, tips, and downloads.

Yahoo! Groups : Simutrans - http://groups.yahoo.com/group/simutrans/
Archive of several years of hundreds of monthly messages.