3rd PlanIt是一款先进的轨道设计辅助工具，可在三维环境下方便的进行设计。

这是最新的v9.01.001版本！

The Premier Track Planning Tool for All Scales

Version 8 offers you unparalleled design capabilities for your railroad layout. Built on a strong, innovative set of design tools, the new 3D terrain and landscape features let you really visualize your layout like never before. Its powerful Dynamic Design Tools let you quickly build precise track of any design. And a comprehensive suite of 3D Object Design Tools let you craft buildings, rolling stock, equipment, automobiles, cranes, boats and just about anything you can imagine.