Railroad Companies

• Austrian Railways
• British Rail
• CN (Canada)
• Deutsche Bahn AG
• Ferrovie dello Jungfrau (Switzerland)
• Ferrovie dello Stato
• Ferrovie Federali Svizzere (SBB)
• SNCB (Belgium)
• SNCF (France)
• Snowdon Mountains Railway (England)

Electronic & model railroads

• Railtronics - Software and Electronic Solutions
• tractronics

Federations, societies, clubs, personal web pages...

• Albulabahn in HOm
• Deutscher Eisenbahn - Verein e.V.
• European Train Enthusiast
• Ferrovia del S. Gottardo
• FIMF, Federazione Italiana Modellismo Ferroviario
• F.T.I. (Ferrovie turistiche Italiane)
• German Railways
• Gruppo Adriatico
• N gauge society
• NMRA, railroad websites database
• Peter's Modellbahnseiten für Spur N
• Railroad.net
• RailServe (railroad websites database)
• The European Railway Server

Railroad museums

• Deutsches Museum in Munich
• Bavarian railroad museum
• Museo Nazionale dei Trasporti (La Spezia - Italy)
• Museo Nazionale della Scienza e della Tecnica (Milan - Italy)
• Museo Nazionale Trieste Campo Marzio (Italy)
• National Railway Museum (England)
• Neumarkt museum(in german only)
• Museo di Pietrarsa (Napoli, Italy)
• Verkehrsmuseum in Nuremberg

Manufacturers

• Arnold
• Brawa
• Faller/Pola
• Fleischmann
• LGB
• Märklin
• Noch
• Roco
• Spanish manufacturer of HO scale models
• Trix
• Viessmann
• Vollmer
• Woodland Scenics

Magazines

• Modellbahn Journal
• Mondo Ferroviario
• Tutto Treno

Rail cams

• Rail web cams