NewTek MDD format

Pie Menu Editor is a Blender add-on from roaoao for building pie menus, regular menus, popup dialogs, side panels and toolbars without coding. It supports Blender versions from 2.79 through 4.3.

Amaranth is a collection of productivity tools and settings for Blender, spanning the 3D View, Compositing, Lighting, Render, Scene and User Interface areas, and it's released under the GNU GPL v3.0 or later.

Point Cloud Visualizer is a Blender add-on for working with colored point cloud files, letting you display, edit, filter, render, convert, generate and export them, and show hundreds of millions of colored points in the 3D viewport.

Stored Views is a community add-on for Blender that saves and restores views, point of view, layers and display configurations. You reach it from the 3D Viewport sidebar under View → Stored Views.

Hot Node is a Blender add-on for saving and adding edited nodes across files. It adds nodes at high speed and covers image matching, node sharing, undo/redo, and customization, with English and Simplified Chinese interfaces.

BlenderAe2 by Salt Media transfers 3D data and objects between Blender and After Effects in both directions, covering vertices, 3D layer transforms, camera data and layer synchronization.

Machin3Tools is a continuously evolving collection of tools and pie menus for Blender, gathered in a single customizable package. It ships in two base variants, Prime and DeusEx, with the DeusEx variant adding more advanced tools.

3D Print Toolbox is a Blender add-on with utilities for 3D printing. It analyzes mesh volume and surface area, checks and fixes geometry, hollows shapes, aligns models to the print bed, and exports to STL, PLY, and OBJ.

UVPackmaster 4 is a UV packing engine for Blender that packs UV maps on the CPU and GPU, using the Cuda and Vulkan APIs, and can run on the CPU and all system GPUs at once.

MMD Tools is a Blender add-on for editing MikuMikuDance (MMD) models. It handles importing and exporting model, motion and pose data, along with chopping and joining parts, plus rigid body, material and motion editing.

SimpleBake brings PBR and traditional texture baking to Blender from a single panel. Select objects, choose maps, and bake — no special node groups or new workflow, working with whatever materials you've already built.