Duha
- Manufacturer of model complements such as wooden bridges, fences, walls, lamps, loads.
- http://volny.cz/duha.du

Modratec
- Manufacturer of interlocking mechanical lever frames for safe operation of signals and points. Applicable to any scale. UK.
- http://modratec.com

Model-Track
- Standard and custom plastic track bases for model railways from N-gauge to OO. UK.
- http://www.model-track.com

Peco Models
- British makers of track and other products.
- http://www.peco-uk.com/

Bridgewerks Power Controllers and Bridges
- A full line of "G" scale power controllers both remote and manual, and bridges made out of aluminum as well as concrete.
- http://www.bridgewerks.com

Kadee: The Coupler People
- Maker of fine couplers and other parts for model railroading.
- http://www.kadee.com

F. Skidmore Products
- Manufacturer of Gumbuster model railroad wheel washing devices.
- http://www.fskidmoreproducts.com