Precision Drawing Tools (PDT)

Round Inset is a Blender add-on that insets a face while keeping its original round corners. You can then bevel the result, and it can prevent corners from overlapping on any face.

Orient And Origin To Selected is a small Blender add-on for changing an object's origin and local orientation while in Edit Mode. Developed by Orange Turbine, it adds operators reached through the orientation dropdown and the Mesh Snap menu.

CURVEmachine is a Blender add-on from MACHIN3 for editing POLY and NURBS curves more flexibly. Its Blendulate tool makes working with curve radii, arcs and non-circular blends essentially non-destructive.

iCity is a city generator add-on for Blender that builds roads, towers, parks, cars, and environments. It suits car simulations, real-time city animation, and architectural design work.

Geodesic Domes is a Blender add-on for creating geodesic dome type objects. Accessed from View3D → Add → Mesh, it was originally a bundled add-on in Blender 4.1 and is now offered with limited support.

LoopTools is a mesh modelling toolkit for Blender that gathers several tools to aid modelling. It was previously part of Blender 4.1's bundled add-ons and is now offered as an extension, provided as it is with limited support.

Extra Mesh Objects is a Blender add-on that expands the Add > Mesh menu with additional mesh object types. Previously bundled with Blender 4.1, it now ships as a standalone extension for Blender 4.2 LTS and newer.

Bool Tool brings quick boolean operators to Blender for hard-surface modeling, covering brush booleans, destructive auto boolean cuts, and workspace tools that carve objects with custom shapes in both object and edit modes.

Extra Curve Objects is a community add-on for Blender that adds extra curve object types. It lives under View3D → Add → Curve → Extra Objects and was previously part of Blender 4.1's bundled add-ons.

MESHmachine is a mesh modeling addon for Blender focused on hard surface work without subdivision surfaces. It fuses and unfuses surfaces, creates variable fillets and washouts, edits bevels, and details meshes with plugs.

A.N.T.Landscape is a Blender add mesh add-on for generating landscapes and displacement. Originally a bundled add-on in Blender 4.1, it's now offered as-is with limited support, accessed from the View3D sidebar's Create tab.