International Rail
Rail Europe

European Rail Service
Railpass.com has great prices to Europe, Australia's and Asia's Train systems

Europe, Asia, Australia, New Zealand
This site has links to all cities with public rail systems.
UrbanRail.net

Overseas City Rail Systems

The Man in Seat Sixty-One

European Rail Service
Virgin Trains
Virgin Trains

European Rail Service
 European Rail Guide

European Rail Service
Japan Rail Pass

Japanese Rail Pass