The new 3ds max raytracer plugin "Caustic Visualizer" has been released for beta testing from Imagination Technologies. Caustic Visualizer is an ActiveShade interactive raytrace renderer based on Brazil renderer technology which allows you to view and modify your scenes in realtime using 3ds max’s modeling, animation and lighting. Caustic Visualier allows you to use native 3ds max and mental ray materials and lights together with MIA materials.

Read More : https://www.caustic.com/visualizer/3dsmax/

The new maxscript "Tubular" from Jokermartini allows you to create an array of circular/square objects. This tool allows users to create objects endlessly which its built in selection list. With this tool users can create bolts, screws, nuts, hour glasses, skirts, donuts, pencils, tubes, cylinders and much more. The script only cost $2 and you will receive the updates for free.

Read More : http://jokermartini.com/2013/04/22/tubular/

Thorsten Hartmann aka hot chip released an updated version of his maxscript for mental ray rendering engine. The Render Optimizer v3 for 3ds max 2014. This version supports light importance sampling, amient occlusion (AO) on GPU and MILA. The render optimizer helps you speed up your optimization and rendering speeds and saves you memory too. Download and try out the Render optimizer maxscript.

Read More : http://www.infinity-vision.de/page/ro_menue

ItooSoft added basic and intermediate level tutorials with its new RailClone 2 Beta Plugin for 3ds max.  You can make sophisticated two dimensional arrays using rule sets to create complex parametric structures. You can make complex modeling with railclone 2 with ease.

Read More : http://www.itoosoft.com/railclone2/tutorials.php

John Martini released his cobwebs maxscript as a modifier plugin for 3ds max. You can now control webs creation in realtime. You can also see speed improvements while creating the spiderwebs. Download cobwebs modifier for free and give it a try.

Read More : http://jokermartini.com/2012/05/09/cobwebs/

ATree3D is simple to use 3D plants generator for architectural visualizations. With this script for 3ds max you can create endless types of trees, bushes, shrubs, flowers or grass. You can use it for low or high polygon models with precise control of the level of details on each sub-element. Script works inside the 3ds max viewport and show instant preview of your changes.

And if you wish to have some free Tree, shrub Models you can download from
http://3dtreexchange.net

Itoo Software announced the first beta of version 2.0 of its parametric modeling plugin for 3ds max. RailClone plugin is for parametric modeling based on custom geometry parts, definable by the user, and a set of construction rules. This new concept of modeling lets you to build complex and realistic structures for Architectural Visualization, Civil Engineering and Interior Design. New features include:
a graphical node editor,
multiple generators by object,
arrays,
operators,
base objects,
exportable parameters

RappaTools3 is an advanced toolset that comes with a great variety of tools for the artist working in 3ds Max. The main focus is to speed up the workflow and to reduce the click count. It offers a wide variety of tools, everything from selection tools to rendering tools. It can help you through the entire process of creating a 3D art piece.

Read More : http://remusjuncu.com/rappatools/

This plug-in can be used to publish your models from 3ds Max and show your 3d models directly on sketchfab. Sketchfab is an online platform for viewing 3d models directly in your browser without the need for a plugin. This is very convenient for communication with clients or presentations.

Read More : http://labs.autodesk.com/utilities/ADN_plugins

Otoy released its new version of Unbiased rendering engine Octane render 1.1. The new feature includes :
- Real-time post processing (bloom and glare)
-  New daylight system
-  Importance sampling for HDRI environment textures
-  Shadow catcher
-  Orthographic camera
-  White balance

Read More : http://render.otoy.com/forum/viewtopic.php?f=7&t=28013