Forest Pack 7 + RailClone 5

Forest Pack

Forest Pack  is the world's most popular scattering plugin for 3ds Max. It provides a complete solution for creating vast areas of objects, from trees and plants to buildings, crowds, aggregates, ground-cover, rocks and more. If you can model it, Forest Pack can scatter it.

Countless studios rely on Forest Pack's production-tested algorithms and native shaders to render scenes with virtually unlimited numbers of objects and polygons, all without putting a strain on computer resources.

Railclone

RailClone is the world's most powerful artist-friendly parametric modelling plugin for 3ds Max. Its unique array-based approach to asset creation is fast, efficient, and easy-to-learn. RailClone is unlike aby other parametric tool. Create objects by distributing and manipulating geometry created using an easy-to-define set of rules - if you can model in 3ds Max, you can create procedural objects with RailClone.

AND

iToo
RailClone
The most powerful artist-friendly parametric modeling plugin for 3ds Max. 

Autodesk
3ds Max
3D modeling, animation, and rendering software for games and design visualization.