Looking for programs that let you make tracks for various Simulators?

Any program that allows you to build a track from scratch. Im aware of BTB for rFactor but I dont own that sim and i dont want to get a sim just for a track builder.

Sims i have and would make tracks for:

Assetto Corsa/Evo
Automobilista 2
Project Cars 2
rFactor 2
Dirt Rally 2?
BeamNG, not really a sim but still