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).

Sums lengths/areas and copies them to the clipboard.

Filters selected objects by desired object types, layers, colors, blocks, linetypes, lineweights, linetypescales, or text content of MTEXT and TEXT objects.

True Quickrotate / Quickmirror function. Rotates / mirrors selected objects about the center of selection in one step.

Inserts text from the clipboard to the selected TEXT, MTEXT, MULTILEADER, ATTRIBUTE, or ATTRIBUTEDEFINITION TAG.

It creates a new layer with the same properties as the layer of the selected object.

Selects all objects of the same layer / block name / object type / color as the selected object(s)

Extends picked end of an object (or last segment) to the picked destination point in the direction parallel to the object.

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.

Set of commands for Autodesk® AutoCAD® to resize viewport, create a new one from model space, update its view and to generate its boundary.

Searches for text content given by the user and selects matching objects.

Copies object further in equal distance with each mouse click or by pressing the Enter button.

Moves/copies/stretches object to the calculated intersection point of xlines. The user would normally have to construct to define that point.

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.

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.

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

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

Edit the texts with mathematical calculations, change precision and add Suffix / Prefix.

Locate any requested Kilometric Position (KP) on an Axis or calculate the KP that corresponds to a selected point in a drawing.