
Quick Groups (Instances)
by MultLabs
Quick Groups (Instances) is a Blender add-on by MultLabs that reassigns Ctrl+G to create groups from selected objects using regular Blender instances, editable in a dedicated Library scene.
by mano-wii·Modeling
Images © mano-wii. Used for product review; image policy.
Snap Line Tool earns its place in the blender_extensions library as a former Blender bundled add-on, now maintained by mano-wii and originally authored by Germano Cavalcante.
Snap Line Tool is a Blender add-on from mano-wii that extends Blender's built-in Snap controls. It sits in Blender's Mesh category and is reached from the 3D Viewport at View3D → TOOLS → Line Tool. The tool was originally part of Blender 4.1's bundled add-ons and was authored by Germano Cavalcante.
The extension is compatible with Blender 4.2 LTS and newer, and it requires no special permissions to run. It is distributed under the GNU General Public License v3.0 or later. Version 6.8.1 renamed the add-on from "Snap_Utilities_Line" to "Snap Line Tool".
Available through the blender_extensions library, Snap Line Tool can be added by dragging and dropping it into Blender or by installing from disk. The developer's page links to documentation for the tool. Its license terms and current support details are worth checking there before use.
Snap Line Tool is best for blender users working with mesh geometry who want to extend the program's built-in Snap controls.
Snap Line Tool is completely free to download and use.
Snap Line Tool lists compatibility with Blender 4.2 LTS and newer, so it is built to run on the 4.2 LTS release and later versions. It was originally part of Blender 4.1's bundled add-ons before being distributed separately as an extension. Because compatibility can shift as Blender releases new versions, check the developer's page for the most current support details before relying on it in a project.
Snap Line Tool is located in the 3D Viewport under View3D → TOOLS → Line Tool. Once the add-on is enabled, you reach it from that toolbar location. The extension falls under Blender's Mesh category and extends the program's built-in Snap controls. If you need step-by-step guidance on using the tool, the developer's page links to documentation that covers it in more detail.
Snap Line Tool can be added to Blender by dragging and dropping the extension into Blender, or by downloading it and using Install from Disk. The download is a small package, around 31.4 KB in size. After installing, enable the add-on and find it in the 3D Viewport under View3D → TOOLS → Line Tool. Full installation guidance is available through Blender's extensions documentation linked on the developer's page.
Snap Line Tool is released under the GNU General Public License v3.0 or later. This is a free and open-source license that lets you use, study, modify, and redistribute the software under its terms. The add-on also requires no special permissions when installed in Blender. For the full license text and any obligations it carries, refer to the GPL v3 terms and the developer's page.
Snap Line Tool is listed as free here in the catalog, and it is distributed under the GNU General Public License v3.0 or later, an open-source license. It also requires no special permissions when installed in Blender. Licensing terms can change over time, so check the developer's page for the current status before you rely on the add-on for a project.
Also in Modeling for Blender.

by MultLabs
Quick Groups (Instances) is a Blender add-on by MultLabs that reassigns Ctrl+G to create groups from selected objects using regular Blender instances, editable in a dedicated Library scene.

by Community
Discombobulator is a Blender add-on that adds greebling and doodads onto a quad mesh. Originally created by Evan J. Rosky, it installs into View3D → Add → Mesh and was once bundled with Blender.

by LIGHTARCHITECT
CityBuilder 3D is a Blender add-on for assembling custom cityscapes from over 115 professional building assets. Designed by 3D artists in Hollywood, it spans multiple themed kits and adds assets to a scene with a click.

by BitByte
Mesh Align Plus is a Blender add-on that moves and aligns mesh parts and objects using geometry and measurements taken from your scene. You pick features called Alignment Keys, then choose what to apply the alignment to.

by Mark Kingsnorth
Shape Generator is a Blender add-on by Mark Kingsnorth for creating a variety of unique 3D objects. Shapes come from randomized extrusions with adjustable length, scale and rotation, and can serve as inspiration or base meshes.

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.