Universal Mechanism
Universal Mechanism - software for simulation of dynamics of mechanical systems. It helps you to solve problems of direct and inverse kinematics, applied dynamics, railway vehicle dynamics.
http://umlab.ru

Jock Valley Engineering
Engineering services relating to railway infrastructure including crossings, tracks, bridges & signals.
http://www.jockvalley.com/

Australian Railway Industry Corporation
Australian railway export association comprising companies supplying technologies to railway operations worldwide.
http://www.aric.net.au/

Jekay International
Manufactures and exporters of railway tracks Fastenings in India including elastic fastenings, and 'K' Type fastenings.
http://www.jekay.com/

Railway Preservation Resources
Helping professionals, museums and private owners understand, conserve, restore and operate historic railway equipment. Historic railway consulting, research, conservation, restoration and collection management.
http://www.railwaypreservation.com

OpenTrack - Simulation of Railway Networks
ETH Zuerich
http://www.ivt.baug.ethz.ch/opentrack.html

Windhoff GmbH
Die Windhoff Bahn- und Anlagentechnik GmbH ist seit 1889 im Maschinen- und Anlagenbau tätig. Die Herstellung und der Vertrieb umfassen eine breitgefächerte Palette technologisch anspruchsvoller Produkte aus den Unternehmensbereichen Schienenfahrzeuge, Bahntechnik und Anlagentechnik. Since 1889, Windhoff has been active in the field of design and engineering of machines and plants. Production and sale today comprise a variety of technologiecally exacting products of the following ranges: railway vehicles, railway workshop equipment and handling systems.
http://www.windhoff.de/

Web-Tracks
Free online privacy tools: Internet tracks finder and internet tracks eraser
http://www.web-tracks.com/

National Railway Company of Tunesia - SNCFT
Information on the Tunisian railway system
http://www.tunisiaguide.com/trains/trains-out.html

Railway Technical Web Pages
Find the best information on railways and railroads around the world.
http://www.railway-technical.com