https://blendermarket.com/products/auto-building

Auto-Building is a powerful add-on that utilizes Blender's Geometry Node to effortlessly create a wide range of building structures according to your preferences!

https://blendermarket.com/products/gobos

Library of textures to generate ultra-realistic shadows in your scenes. Thanks to the asset manager it's easy to import your gobos into Blender in 1 click. Discover a complete collection of HD ready textures for Blender.  14 categories are included. In total you will find 149 textures!

fixed gobos as well as animated gobos are available in different categories, also discover the new animated colored gobos in this new V2 version. Your animations will be incredibly realistic with these video textures.

https://blendermarket.com/products/mask-tools-sculpt-mask-utility

Enhances Mask operations in sculpt mode 

Saving / loading masks to vertex groups, masking edges / cavities, duplicate / separate / delete / displace modifier etc.

With the standard version of 1001bit Tools you can create parametric architectural elements (such as stairs, windows, doors, roofs, blinds, floor beams... etc.) within minutes. With 1001bit Pro you can create even more architectural elements, and there are many useful editing tools. You can also save frequently used settings for easier selection in the future. There are currently 40 different tools in 1001bit Pro.

QBlocker is an interactive object creation tool for Blender 2.8, 2.9, 3.0 and 4.0.

Version: 0.1.52 For Blender 3.0

Version: 0.1.53 Same features but compatible only with Blender 4.0

Features:

• Create Cube, Plane, Cylinder, Circle and Sphere and more Objects interactively

• Start your object base with different methods

• Change Origin from object center to base on the fly

• Change cylinder and sphere segment count freely

• Use working plane to define your custom grid

• Use the addon own snapping tool on grid, vertices or edge midpoints

• Use polygon aligned snap grid points for precise placing

• Axis and Oriented alignment options

• Left and Right mouse button support

• Turn into QObject tool

• Parametric objects

https://captain-cirno.gumroad.com/l/DaLdj

Blender add-on that adds new box, circle and lasso selection tools that can automatically toggle x-ray shading, perform selection through with or without x-ray shading, select objects either inside or overlapping a selection area, change selection settings by changing drag direction of selection.

https://blendermarket.com/products/djh-geometry-node-assets

My Geometry Node Assets are a collection of modifiers/custom nodes for Blender that you can import as an asset library.

It is my opinion that it is easy for a GeoNode setup to try and do too much.  My approach to making modifiers is to think of them as tools in a tool box, and while working on you scene you will often use several tools in combination rather than one 'super-tool.'  Many of my modifiers are simple enough to allow for many generic combinations, while others are individual pieces of a modular set and were specifically built to be used in a stack.

https://blendermarket.com/products/kekit

keKit is a General Tool-Kit Blender Add-on

• The Add-On provides extensive options for customizing & optimizing workflows.

• An all-in-one collection of Scripts, Tools, Macros and Pie-Menus, etc.

• Modular - The kit is composed of separate modules that can be enabled or disabled.

• At your discretion - No preset shortcuts.

https://blendermarket.com/products/simply-cloth

Simply Cloth Pro is a helper Addon for everyone who works with cloth in Blender.  With this addon you can create Cloths faster and easier than before. You don't need a lot of previous knowledge with the Cloth physics settings! You can simply select a presets and quickly adjust them to your needs. Of course some basic understanding of Blender would be nice. The addon is just a help tool to set up quickly and test your cloth objects in Blender!

https://blendermarket.com/products/k-cycles

K-Cycles is a highly optimized custom build of Cycles-X render engine, ultra lighting, post FX, ultra denoiser and realtime viewport lighting and effects for Blender. It is fully compatible with Cycles and designed for Nvidia GPUs.

https://d95design.com/

Auto Light 1.74
Auto Material 1.99
Divide Clone 1.0
Frame Maker 1.15
Quick Boolean 1.10
Smart Camera Converter 1.26
Smart Camera View 3.99
Smart Measure 1.26
Smart Merge 2.28

Louver Generator - MCG 3dsmax Modifier Plugin
MCG | 65 KB

Three Most Wanted Scripts for Photoshop
3 JSX | 81 KB
Auto Crop | Batch Web Images | Batch Multi Save

Making Ghost Geo for Viewport Motion Blur - Maya Python Script
3 PY | 35 KB

Quad Patcher - Script for Maya
PY | 33 KB
Edge Border Mode | Face Mode | Extrude Mode

String Lamp Generator - 3dsmax Script Tool
MZP | 1 MB

3dsmax <-> RizomUV Bridge - Script for 3ds Max
MZP | 252 KB

https://aescripts.com/bleed/

https://d95design.com/product/divide-clone/

https://d95design.com/product/smart-measure/

This script is intended to replace the default Measure Tools in 3ds Max.  It can be used to measure common dimensions such as distance, total length, area, angle and dimension of objects in the coordinate system.  The dimensions shown are not actual geometry, and they do not scale when you zoom in the viewport. Therefore it is very suitable during the concept stage, or to quickly check dimensions in drawings.

http://d95design.com/product/smart-merge-2/

Smart Merge is a tool for quick import/merge of 3dsmax files, or downloaded archives from 3D Stocks or Asset Libraries site. You can quickly batch load these files into the current scene by simply drag and drop, and then selecting the files to merge from the list.

https://d95design.com/product/quick-boolean/

A set of tools to quickly perform ProBoolean operations on current selected object with preset profile such as Union, Intersect, Hollow, Trim, Subtract, Split and Knife.

It works very similar to SketchUp’s Solid Tools, where you can create complex boolean blocks in just a few clicks.

Ucupaint is a Blender addon for managing textures as layers for Eevee and Cycles render engines.