App for Autodesk® AutoCAD® makes it easy to create or draw a catenary curve as a polyline by specifying the start and end point and the length/immediate point/sag and optionally a diameter(width).

An app to batch change or fix file paths and names of external references in drawings. Supports Xrefs, Datalinks, Raster Images, PDFs, DWFs, and DGNs.

Publish sheets in Sheet Sets and other drawings with layouts to files like PDF, DWF, PNG, or JPG/JPEG and have the files created named as you want based on a naming formula that you specify.

DWG Columns freeware shows the DWG and DXF version in Explorer columns or in file dialog boxes within Autodesk® AutoCAD® or other applications.

This app for AutoCAD® simplifies the process of publishing sets of drawings to DWF and/or PDF. The trial is fully functional except that it only publishes up to 5 drawings or layouts per session.

This app for Autodesk® AutoCAD® simplifies the process of publishing (plotting) sets of drawings to DWF and/or PDF.

Allows changing layer color of selected multiple objects without entering layer manager.

Lisp allows continuing drawing Polyline, 2D polyline, 3D Polyline, MultiLine, or Line starting from the selected end.

Attempts to improve a field survey in certain cases by creating a smoothed out version of an original 3d polyline

A road design productivity tool to quickly visualize horizontal sight distance lines along a polyline alignment.

Interactively positions text characters along lines, polylines, splines, circles, arcs and ellipses.

Generates successive polyline approximations of lwpolyline/polyline3d objects to smooth out the original shape but keep the overall polyline trend.

A simple 2D maze generation app. It can also be used to generate random hatch patterns.

Morphs one polyline into another by generating intermediate polylines at arbitrary stages of the process.

A basic recursive random tree generator in 2D and 3D.

A recursive Hilbert fractal space-filling pseudo curve generator in 2D/3D

Automatically update Autodesk® AutoCAD® title block attributes from a Microsoft Excel spreadsheet.

A seven-parameter similarity transformation calculator in 3D space.

Draw your pipe system simply and quickly.

Arrange is a plug-in for Autodesk® AutoCAD® for arranging objects.

Convert your Autodesk® AutoCAD® environment from Metric to Imperial and vice versa units in one click.

This plugin helps you to create a Bunch of Polylines by selecting the start and end points, and drawing a single main polyline.

This plugin can help you to export selected objects to PDF.

Simple Multiple Offset helps to create multiple offset from polyline, line, circles, rectangles and ellipse.