Consulting
AEA Technology Rail, Agentur BahnStadt, Allen Railroad Consulting, Asia Pacific Rail, Atkins Rail Ltd, Balfour Beatty Rail, Canac Rail Services, Comrac Rail Transportation Technologies, Corus Rail Consultancy, Crouch Engineering Railway Engineers
Contractors
Amtrac Railroad Contractors, Bridgen Enterprises Ltd, Cando Contracting Ltd., CRMS Railcar Cleaning, Dampflokwerk Meiningen (Germany), EuroTrac GmbH Verkehrstechnik, GBM Gleisbaumechanik Brandenburg/H. GmbH, Great Plains Rail Line Contractors, H&H Engineering and Construction Inc., Hawthorns Project Management Limited
Leasing
A-Z Railcar, AAE Eisenbahnlinie Ahaus-Alstätte, Angel Trains, Aquarius Railroad Technologies, Bombardier Capital railcar leasing and management , Classic Rail Cars, GATX Capital, GATX Rail Corporation, Helm Financial Corporation, Indiana Boxcar Corporation
Logistics
CSX Corporation, Domestic Container Transportation, Inc., DTE Transportation Services, Industrial rail operator, Intercontainer - Interfrigo SA - Rail transport, Joseph Transportation Inc., On-Track Railcar Services, PCC Cargo Terminal, Slawkow, RSI Logistics, Inc., RTChem
Software
Advanced Signal Technologies, L.L.C., Express Yard, GeoMetrix - Railcar Fleet Management Internet Serv, Integrated Data Communication Systems (IDCS), Inc., Integrated Data Communications Systems, Inc., iRAIL, LLC, NetREDI Overview, OpenTrack - Simulation of Railway Networks, Rail Software, Rail-cad
Main Line Rail Management
Provides operations planning, marketing, and valuation consulting services. Main Line also manages two shortline railroads, Carolina Coastal Railway and Landisville Terminal and Transfer.
MRA Services, Inc.
Technical publishing and project management firm specializing in technical documentation for the rail industry.