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Align 2 Custom is a Blender add-on that aligns the 3D View to the 3D cursor orientation or to a custom transform orientation, using keyboard shortcuts or the View menu.

Shape Key Manager Pro is a Blender addon for speeding up shape key rigging. It duplicates and mirrors shape keys while maintaining and retargeting their drivers, and transfers shape keys between objects with a single click.

Stamp Master is a Blender add-on from CGMatter for stamping and adding decals through automated, material-based projection. Select a target, pick a stamp, set guided coordinates, and apply, with layering and noise-based fading built in.

Is key Free is a Blender add-on that finds free keyboard shortcuts, reports which ones are already in use, and prints a key list. It lives in the Text Editor sidebar's Dev tab.

Passpartout Slider is a Blender add-on by Costa that controls the active camera's passpartout alpha percentage. Hold P to adjust the value and tap P to toggle it off and on.

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.