Area Object Link (AOL) is an add-on AutoLISP application using a single GUI to facilitate linking Circles, Ellipses, Hatches, Plines or Regions' Area value to an Attribute, MText or Text with Fields

Custom hatch pattern editor for CAD hatch fills.

SeeBlock is a powerful Autodesk® AutoCAD® add-on to build and manage block libraries that enhance your ability to catalog and manipulate DWG symbols and drawings.

Poly-U includes 67 kinds of mathematical formulas, gradient curves between curves, influence curve, quadrilateral mapping, curve optimization, associative curve, inner and outer contours, etc.

Copy and Paste the group(s) between two drawings. Normally, when copying object(s) in group to another drawing, the group information will be removed. This tool will help you in this situation

This plugin helps managing groups of level indicators, often used in architecture and building design.

Automatically assign new entities to specific layers based on their type. Analog to AutoCAD Mechanical functionality, but works with every AutoCAD flavor and with six different entity categories.

The ArchBlocks Hatch Patterns library for AutoCAD® gives you 376 hatch patterns for architectural, interior, geological, mechanical, and landscape designers. Compatible with ALL versions of AutoCAD.

Extended Offset - Multiple Offset with ability to offset on left/right and both sides. You can set an unlimited number of offset values.

Creates direction pattern for steep slopes. The Pro version has some extra features compared to the free version.

Tetris version for Autodesk® AutoCAD®