by Azerilo·Modeling
Images © Azerilo. Used for product review; image policy.
Also bundled in the "Azerilo Smart Tools" package alongside seven other add-ons, offered there at a discount.
Symmetry Checker is a Blender add-on from Azerilo for detecting and fixing mesh asymmetry. It quickly identifies asymmetric vertices along the X, Y, or Z axis, and selected vertices are automatically highlighted so you can address issues precisely. A user-defined threshold lets you fine-tune the detection tolerance, which helps with high-resolution models.
When asymmetry is found, the one-click symmetrize tool applies Blender's native symmetrize operation, with control over the mirror direction such as -X to +X or +Y to -Y. The add-on reports its status directly in Blender's status bar, showing a check mark for symmetric meshes and a cross when asymmetry is detected. Everything is reachable from the 3D Viewport Sidebar under the "Symmetry Checker" tab.
Azerilo positions the add-on for character modeling, hard-surface design, and cleanup work. Typical uses include cleaning up scanned or sculpted meshes, ensuring topological accuracy before rigging or animation, modeling hard-surface objects with structural symmetry, and debugging accidental vertex edits. It is also included in the "Azerilo Smart Tools" package alongside seven other add-ons.
Symmetry Checker is best for blender artists working on character modeling, hard-surface design, and cleanup of scanned or sculpted meshes.
Symmetry Checker is completely free to download and use.
Symmetry Checker lists support for Blender versions 3.6 through 5.0. If you are running a release within that range, the add-on is intended to work with your setup. It installs into Blender and its controls appear in the 3D Viewport Sidebar under a dedicated "Symmetry Checker" tab, so once enabled you access detection and symmetrize features from there. For any questions about a specific build, check the developer's page for the latest compatibility details before installing.
Symmetry Checker fixes asymmetry with a one-click symmetrize tool that applies Blender's native symmetrize operation. You keep full control over the mirror direction, for example -X to +X or +Y to -Y, so you choose which side of the mesh is mirrored onto the other. Before fixing, the add-on identifies asymmetric vertices along the chosen axis and highlights the selection, letting you review what will change. Feedback in the status bar indicates whether the mesh reads as symmetric or asymmetric.
Symmetry Checker includes a customizable threshold that lets you fine-tune the tolerance used for detecting symmetry. According to Azerilo, this helps ensure accurate results even on high-resolution models, where small vertex offsets could otherwise register as asymmetry. You adjust the threshold to a value that suits your mesh, then run detection along the X, Y, or Z axis. It is presented as a lightweight add-on aimed at character modeling, hard-surface design, and cleanup workflows.
Symmetry Checker is listed as free in this catalog and is released under the GPL license. It is also included in the "Azerilo Smart Tools" package, which bundles it with seven other add-ons at a discount. Because licensing and availability can change, check Azerilo's page for the current terms and to confirm what is included in the bundle. That page is also where you can reach the developer directly with any questions about the add-on.
by Community
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.
by Community
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.
by nickberckley
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.
by Community
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.
by MACHIN3
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.
by Community
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.
