Rust Blender Addon

The RUST Blender Addon creates a quick rust shader for your 3d models, its works with Eevee and Cycles.

https://blendermarket.com/products/rust-blender-addon

MEDUSA NODES - Procedural Hair System for Blender

The addon features Geometry Nodes node groups, which are purposely made to achieve realistic deformations and visualization of hair.
The node groups are streamlined by the help of addon's own Medusa Nodes Hierarchy panel, where one can easily view, and edit all of the different nodes and their parameters.
For more information you can visit the blenderartists.org or documentation page. The documentation page is in progress.

https://ikakupa.gumroad.com/l/XEzSy

Slice It

The SLICE IT addon allows you to slice meshes in even increments in any X,Y or Z direction instantly. This is a great addon for bending unusual meshes, like text or complex objects. It's super easy to use and you can find it in the Tools N panel in the 3D viewport. Here are a few videos which can help you understand it better.

https://blendermarket.com/products/slice-it

Pupa Animate Pro

What is PUPA Animate Pro?
If you are looking for a tool to help you create a simple and fast workflow for rigging, applying, and customizing animations, or retargeting animations, this is for you. PuPa Animate Pro has been designed to be Userfriendly, fast, and Scalable for all your production needs.

https://blendermarket.com/products/pupa--pro

Geosim V1.4 | Photorealistic Planets (Eevee / Cycles)

GeoSim is an add-on which allows the creation of photorealistic, realtime, customizable planets in a matter of seconds. Combined with a robust and easy to use shader nodegroup, GeoSim is a must-have for any 3D artist looking to create space/sci-fi scenes.

https://blendermarket.com/products/geosim--photorealistic-planets-eevee--cycles

FaceIt

Faceit is an all-in-one facial rigging, motion capture and animation Add-on. An intuitive, semi-automatic and non-destructive workflow guides you through the creation of facial shape keys that are perfectly adapted to your 3D model's topology and morphology, whether it’s a photorealistic human, anthropomorphic or cartoon model. You maintain full artistic control while saving a ton of time and energy.

https://blendermarket.com/products/faceit

RBDLab is a new addon to take full advantage of Blender physics. From fracturing objects to making them explode, adding smoke, debris or advanced use of constraints, RBDLab will allow you to do things in Blender that until now were practically impossible or in which you had to spend a huge amount of hours.

RBDLab has different option panels and a "linear" workflow, from Fracturing, Rigidbody, Constraints, Simulation, Particles... you will go through all the phases that a good RBD system requires.

https://blendermarket.com/products/rbdlab

Fog Planes

This Fog Planes addon completes the work with fog in the 3d environment. It provides you with a large gallery of fog textures which come with advanced shader for the necessary individual adjustments in the fog planes.
It's easy to use and with a few clicks you can create realistic fogs that give your renderings the right mystical atmosphere.

Whether you need it for still renderings or for animations, with the Fog Planes you can quickly add a detail to nature scenes that gives great results and don't unnecessarily increase the rendering time.

https://blendermarket.com/products/fog-planes-addon

Droplet Generator 2.1

Full procedural droplet generator for Blender 3.1 and upwards.

https://blendermarket.com/products/droplet-generator--blender-3