Pacific Northern Rail Contractors Corp.
Canadian railway construction contractor and supplier of new and used railway equipment and track material.
http://www.pnrail.com/

Bulgarian Association of Consulting Companies in Railway Construction.
BACCRC. Bulgarian association of companies, whose activity is concerned with design, supervision and science researches in the field of the railway construction.
http://www.bakfjs.org/

Railway Sleeper.com
UK supplier of new and used hardwood and softwood railway sleepers. Railway sleepers stocked include(oak,pine,beech,jarra,azobe,greenheart,mora) for landscaping,construction and furniture.UK Delivery and cutting service for railway sleepers.
http://www.railwaysleeper.com

Railway property : A Treatise on the Construction and Management of Railways
Facsimile of Jervis's 1861 book designed to afford useful knowledge in a popular style to the holders of this class of property as well as to railway managers, officers and agents.
http://quod.lib.umich.edu/cgi/t/text/text-idx?c=moa;cc=moa;view=toc;idno=AGW7884.0001.001

UCA Railway Equipment
Railroad Equipment
http://www.uca.be

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

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

Robel Bahnbaumaschinen GmbH
ROBEL Bahnbaumaschinen GmbH: Gleisbaumaschinen Bahnbau Gleisbau. Hersteller Lieferant Service. Gleise Schienen Gleisinstandhaltung
http://www.robel.info/

Sureung Trading Corporation
Railway, industrial machinery, textile machineries, special construction; Korea.
http://www.sureung.com