Atlantic Coastal Railway Archive
- Archive of downloads of various engines and cars.
- http://www.atlanticrail.com/

Game Industry News
- Previewed by Jason Byrne. "Sure there's 3D graphics, but they are only so-so and poorly utilized."
- http://www.gameindustry.com/review/item.asp?id=360

GM&O SIMULATIONS
- Payware locomotive packs.
- http://www.mstsgmo.com

Elvas Tower. Forums and addon downloads
- MSTS and Railfan message forums and files. Downloads require subscription.
- http://elvastower.com

Virtual Rail
- Offers reviews of freeware routes.
- http://www.virtual-rail.co.uk

Dieselswest
- Add-on locomotives for Microsoft Train Simulator. GE U-Boats from 1956 to 1975. Also provides some free ware rolling stock
- http://www.dieselswest.com/

trensim.com
- Spanish freeware Microsoft Train Simulator download library, tutorials, documentation, discussion forum.
- http://www.trensim.com

Train Simulator Add-ons
- Locomotives, rolling stock, and new sounds plus links to other third party products.
- http://www.3d-perfection.com

Maple Leaf Tracks
- A Canadian company that provides add-ons for Microsoft Train Simulator and a message forum.
- http://www.mapleleaftracks.com/

MsTS Techie
- Site for technical information about Train Simulator. Includes information about making routes.
- http://www.topcatdk.dk/msts/

Russian Resource for MSTS
- Russian and English language site. Includes many downloads and descriptions.
- http://www.trainsim.ru/

Full Bucket Line - A Desert Route for MSTS
- Home of the "Full Bucket Line", a desert-style route. Route and rolling stock for download.
- http://www.fullbucket.com/msts/

Yahoo! Clubs MS Train Simulator
- Microsoft Train Simulator fan site. Chat, share ideas, post add-ons and screen shots.
- http://groups.yahoo.com/group/mstrainsimulator/

UKTrainSim
- News, discussion and extensive download library for Train Simulator in the UK.
- http://www.uktrainsim.com/

Simulated Railway: Microsoft Train Simulator
- Intends to create the former Great Central Railway from Nottingham Victoria to Leicester Central.
- http://homepage.ntlworld.com/nick.willis/mstrainsim.html

Route Control
- Freeware version can diagnose and prevent program crashes due to problems with activities, full version provides compression of routes to save disk space.
- http://www.howintheworld.com/routecontrol.shtml/

Step by Step Guide to Route Building for MSTS
- Tutorial introduction to route building in Train Simulator, written by Michael Vone. Available for purchase and download in Adobe Acrobat format.
- http://www.avsim.com/hangar/utils/mvchallenges/mstsguide/MSTSguide.html

Railserve.com
- Train Simulator resources, trains, activities and scenery. Downloads require free registration.
- http://www.railserve.com/Computers/MSTS/

GWR Highworth branch line in the 1920's
- History of the Swindon to Highworth branch line (being built as an MSTS route). A virtual railway company with some rolling stock for download.
- http://www.highworth.freeuk.com

The SEPTA Project
- A SEPTA (Southeastern Pennsylvania Transportation Authority) add-on being developed for Train Simulator. SEPTA covers Philadelphia, the suburbs, and all the way out to Trenton, NJ.
- http://tsp.substitution.org/

Train Sim Depot
- News, help information and downloads for Train Simulator.
- http://www.trainsimdepot.5u.com/

Train-Sim.com
- Downloads, software news, Trainmaster and Microsoft Train Simulator forums plus general rail news.
- http://www.train-sim.com/

Train-Magazine.Com
- On line magazine of simulator and railroad news. Locomotives, wagons, and sceneries for download.
- http://www.train-magazine.com/

3D Train Stuff
- Route and rolling stock addons. Some free downloads and product information. Tips and forum for 3D modelling.
- http://www.3dtrainstuff.com/

3D Trains
- Addons for Train Simulator.
- http://www.3dtrains.com/

Train Artisan
- This site was created to showcase new, custom built locomotives for use in either Z-scale model railroading or Train Simulator.
- http://www.trainartisan.com/