Bob's Track Builder is described as 'allows you to create tracks using simple mouse clicks to form the underlying track mesh ready to be imported into popular car racing games and raced on against your friends' and is an app in the Photos & Graphics category. There are more than 10 alternatives to Bob's Track Builder for a variety of platforms, including Windows, Mac, Linux, iPhone and BSD. The best alternative is Blender, which is both free and Open Source. Other great apps like Bob's Track Builder are SketchUp (Freemium), Autodesk Maya (Paid), Autodesk 3ds Max (Paid) and Rhinoceros (Paid).
3DSimED is a Windows DirectX application allowing the creation and visualization of models from many racing sim formats. Models can be exported to Assetto Corsa, Automobilista, rFactor 2 (and 1), GTR2, Race 07, GTL, N2003 and many other games.
picoCAD is a program to build and texture lowpoly 3D models. Programs for modelling are overly complicated, picoCAD aims to make it fun, easy, and accessible by focusing on the bare essentials. This program was made using pico 8.
Artist3D is an extraordinarily easy-to-use 3D polygon modeling tool. It works completely without forms, pull-down menus, pop-up menus and text input. Only one modeling window covers each operation function. Less than 30 operation elements control the active interaction options.
Sketchup Automation Tools is a Handy Toolbar Launcher that works special in Sketchup Pro Software. What this Launcher can do is instead of moving the Mouse Pointer to the Toolbars, the Toolbars comes to you in a Single Mouse/Stylus/Touch Click.