Engraver is an Blender addon with set of few tools designed to help carving decals in 3d models. This addon was designed to support modeling with custom normals workflow.

Engraver_v**.py - Addon for Blender 2.7*

Engraver_(2_8)_v**.py - Addon for Blender 2.8

https://blendermarket.com/products/camswitch

Cam Switch is an artist-friendly solution for Blender users who want to work with multiple cameras in a more efficient and organized way. With Cam Switch, you can easily access all of your cameras right in the 3D viewport, making your workflow faster and more streamlined.  Cam Switch's popover panel allows you to quickly select, rename, and delete cameras. With different icons, it's easy to see which camera is active and which one is selected. Plus, with the ability to assign a custom shortcut, you can access the camera list panel without ever leaving your keyboard.

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://www.skillshare.com/en/classes/Blender-Cosmos-Procedural-Gas-Planets-with-Blender/1622033980

 

This class teaches you how to create a procedural gas planet in Blender.

Blender Market - Intro To Motion Graphics

https://blendermarket.com/products/intro-to-motion-graphics-blender-course

 

7 Hours of Blender 4.0
Geometry Nodes
Procedural Shading
Lighting
Looping
Eevee+Cyles

https://blendermarket.com/products/simplebake---simple-pbr-and-other-baking-in-blender-2

SimpleBake is the definitive baking solution for Blender. In short, it allows you to simply bake PBR and other textures.  Blender provides a very powerful way to create complex PBR materials by using nodes. However, what should be a simple process of baking and exporting these materials for use with other software or systems (Substance Painter, Second Life, Sketchfab, Unity etc.) is surprisingly difficult.

https://blendermarket.com/products/weight-paint-and-bones-a-blender-toolkit

'Weight Paint and Bones: A Blender Toolkit' is a Blender addon that offers additional tools and features for weight painting and bone editing. The addon aims to simplify these tasks, making them more straightforward and efficient.

https://blendermarket.com/products/construction-lines

Construction Lines is a tool for accurate CAD style modelling. Build snappable guide points and edges, draw lines and primitive shapes in place, automatically create faces in closed geometry, precisely move, duplicate and rotate geometry around a scene and cut-through meshes with extrude.  Guide edges and points allow for a construction workflow where guides are set and models are then constructed within these guides. The guides won't interfere with model geometry and can be toggled off and on when required. Guide edges will disappear when working outside of Construction Lines and neither Guide Edges nor Guide Points will be rendered.

https://blendermarket.com/products/modular-workspaces-for-blender

Modular Workspaces for Blender is a combination of an addon and asset library file designed to speed up your startup workflow.  Drag and drop pre-made collection assets from the asset browser into your scene, and with the press of a single button, Modular Workspaces will recenter, unpack and organize all of the imported assets into new collections, ready for you to start working.

https://blendermarket.com/products/hard-surface-rigging-in-blender
Welcome to the Hard-Surface Rigging in Blender course. This is the beginner’s guide to mechanical rigging in Blender, presented by rigging and animation guru Jeannot Landry and co-produced by the Creative Shrimp team.