Many third parties have created tools and other resources for developing OpenBVE addons. A brief list of these is below:
Note: Please see the respective pages for any licence conditions.
Track and Railway Structures:
TrackGen creates smoothly curved track (including pointwork), platforms and bridges.
Forest Builder generates forests, carparks etc.
BVE Klub Object Library
Various objects, including Hungarian trains, and more general scenery items.
BVE Cornwall Objects
Assorted British rolling stock, buildings and cars.
Assorted road traffic