PolyDamage v1.01 for 3Ds Max

http://www.scriptspot.com/3ds-max/scripts/polydamage-for-3dsmax
PolyDamage plugin is a tool to quickly add damage and imperfections to models. Nothing is perfect in real life, so adding damage to your models make them look more realistic. PolyDamage is a quick alternative to manually sculpting damage with other software packages. PolyDamage adds an extra realism to concrete walls, grounds, stones, columns. PolyDamage quickly adds damage to corners and edges. Since it is procedural, you can make millions of damage variations of one single object. You can save the seed value of damage and next time you can get the same result with this seed value. You can adjust the parameters and adjust the depth of damage, or edge damage amount. Adjust the resolution slider to increase the level of detail in damaged areas. PolyDetail gives a unique material ID for damaged faces so you can apply a spesific damage material to only damaged faces.

miauu's Script Pack vol.2 v6.6 for 3ds Max

https://miauu-maxscript.com/portfolio-item/miauus-script-pack-vol-2/

miauu's Script Pack vol.1 v4.4 for 3ds Max

https://miauu-maxscript.com/portfolio-item/miauus-script-pack-vol-1/
- Visual Pivot Placer - Visual Pivot Placer offers you the fastest and easiest way for manipulating the pivot of single object or of a group of objects.

https://km-3d.com/produkt/weight-pro-3ds-max-plugin/
WeightPro is a c++ 3ds Max plugin for automatic, fast and smooth Skin modifier weighting, no matter if the mesh has good or messy topology.
It voxelizes the mesh with the skeleton using GPU to calculate the shortest distances between bones and vertices. It allows you to make adjustments during posing in realtime.
After that you can delete the plugin from the scene and from now the skinned object is ready to use by everyone without the plugin.

KM-3D DeltaMushToSkin v1.0 for 3ds Max 2013 - 2022 x64

https://km-3d.com/produkt/deltamush-skin-plugin/

DeltaMush to Skin is a c++ 3ds Max modifier which smooths deformations while preserving details with “converting” to Skin feature. The plugin solves Skin weights matched as close as possible to the DeltaMush result. It enables the user to export such rigg to the game engine like Unity, Unreal etc. The whole process is incredibly fast thanks to multithreaded optimization.

Available for 3ds Max versions: 2013 (32-bit & 64-bit), 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022

KM-3D Cloth Deform 1.0 for 3ds Max 2015 - 2022

https://km-3d.com/produkt/cloth-deform-1-0/
Cloth Deform is a modifier which creates cloth-like wrinkles on top of any mesh deforming modifier, which squashes/stretches its edges (e.g. Skin). It is history-independent, so it gets a single mesh as an input and transform it into a wrinkled-state based on its rest pose. It doesn’t do any simulation, so to see the result at frame 100 you don’t have pre-sim the (0-99) range, like in any other cloth simulators.

Corona Renderer 6 Material Library

https://corona-renderer.com/resources/materials

Corona Renderer installation comes with a dedicated Corona Material Library, which offers more than 300 high–quality materials. You can additionally download the following material sets, which were created for earlier versions of Corona Renderer.

Corona Renderer 6 (hotfix 2) for 3ds Max 2014 - 2022

https://corona-renderer.com/

Corona Renderer delivers high quality, physically-based shading in production rendering. All its features are tightly integrated into Autodesk 3ds Max.

Contrast Pro 1.0 for 3ds max 2013 - 2022
https://mariussilaghi.com/products/contrast-pro
Contrast Pro is a modifier for 3ds Max that enhances the details of 3d models. It allows you to quickly add contrast to whole models or to highlight only some specific areas. Areas with large and small polygons can be set to receive the same amount of contrast with the "Uniform" option.

Unwrap Pro 1.04 for 3ds max 9 - 2022
https://mariussilaghi.com/products/unwrap-pro
Unwrap Pro is a 3ds Max plugin which unwraps meshes while producing low distortion, overlap free, weighted density UVs unlike the 3ds Max Peel command which produces overlapping UVs with high area distortion.

Crea3D - Camera Studio v1.0 for 3ds Max
https://www.turbosquid.com/FullPreview/Index.cfm/ID/1722438
Camera Studio allows you to animate cameras much faster!
You can create an orbit or spiral motion around selected objects with just 1 click and easily manipulate it. There is a number of other motion presets. Add shake to selected cameras when you need.The motion path function allows you to create a seamless motion between several reference cameras.

https://www.sinisoftware.com/Products
The IgNite toolset includes;
Springboard – daily workflow tools located in one UI, including camera and display settings, MAXScript loader, SiNi configuration settings and much more…
Forensic – inspects your scene for issues and fix them before working on a scene. 5* rated by 3DWorld Magazine. Forensic is also available as a FREE version.
Scribe – spline tools, repair, cleanup, optimise any CAD imported drawing.
Sculpt – mesh tools, repair, cleanup, optimise any 3D, BIM model (Revit, Rhino, Sketchup etc).
Unite – relink and archive projects, including over 45 3rd party file types you may use in your work.
Jumble – random object transforms.
Illumi – HDRI setup wizard (includes professional HDRI files from HDRI-Skies).
AMI – Asset management interface that is being developed to future proof your library, including versioning, LOD, multi-formats and more.
SiNiScript – Build your own MAXScripts adding SiNi tools and functions.
PREFLIGHT – Utility checklist tool to run-through and check-off before exporting to Unreal Studio.
The object plugins include;
SiClone – Parametric modeller that allows you to build simple repetitive assets or complex models, with an easy to use UI.
Disperse – 3D paint and object replace tool.
ProxSi – Universal proxy with round-trip editing and asset lock.
Scatter – Random scattering of objects. (Beta).

TurboTriSmooth 1.03 for 3ds max

https://mariussilaghi.com/products/turbotrismooth
TurboTriSmooth is a modifier for 3ds Max that subdivides triangle meshes while producing smoother results and nicer topology than the standard TurboSmooth.
It can be used on triangulated models, cloth, scans, decimated meshes, fluid simulations, terrain or on any triangle mesh.
It will automatically triangulate the models before subdivision.

TurboSmooth Pro 1.02 for 3ds Max

https://mariussilaghi.com/products/turbosmooth-pro
TurboSmooth Pro is a modifier plugin for 3ds Max which produces nice smooth semi-sharp creases on your models, unlike the ugly creases that the standard TurboSmooth produces. It also give you the ability to have linear UVs which in some cases can help in the texturing pipeline.

Kitchen Cabinet Generator V3.0 3ds max 2016-2022

Kitchen Cabinet Generator is a script that is efficient in automatically creating 3D kitchen cabinet models in 3dsMax. With many styles of benchtop,door&cabinet, it can be applied flexibly in Archviz projects while saving a lot of time for 3D artists.

https://mariussilaghi.com/products/tension-morpher
Tension Morpher is a modifier plugin for 3ds Max that quickly and easily adds realistic stretch and squash effects to parts of animated characters and objects. It also can be used to create wrinkles and preserve the volume on deforming meshes.

Shell Pro 1.0 for 3ds Max 2013-2022

https://mariussilaghi.com/products/shell-pro
Shell Pro is a modifier for 3ds Max that creates a shell around models without causing self-intersections unlike the standard Shell modifier which produces a lot of self-intersections. Surface details are also preserved very well.

Path Deform Pro 1.0.1 for 3ds max 2013-2022

https://mariussilaghi.com/products/path-deform-pro

Path Deform Pro is a modifier for 3ds Max that deforms models along a path without causing self-intersections unlike the standard Path Deform modifier which produces a lot of self-intersections. It produces less pinching/stretching where the path bends.