Quickly isolates a range of contours by setting up the user contour analysis for a range of elevations.

Applies an object style to multiple objects at once. This app allows you to quickly apply a style to several objects at once.

Exports selected profile view and profiles to closed polyline DXF files - for use with Rocscience's SLIDE software.

Copies Profile View Labels from one Profile view to another.

Traces profile with a polyline between selected stations.

Performs find and replace on a number of Autodesk® AutoCAD® Civil3D® Object type's Names and Descriptions.

This program calculates the offset distance of multiple points to a straight line consisting of an alignment (polyline). Handles easily 1000k points in .txt formats.

Extracts all of the boundaries from surfaces in the drawing.

Calculate pond/detention basin storage capacities, water surface elevations, and stage storage quantities with ease.

90-Day Trial version with full functionality. Very fast Labelling of polylines or Xrefs containing polylines for Autodesk® AutoCAD® 2017, 2016, 2015 and 2014.

Very fast Labeling of polylines or XRef's containing polylines for Autodesk® AutoCAD® 2017, 2016, 2015 and 2014.

Apply color themes to surfaces using elevation ranges.

Apply themed colors to surface showing slope analysis.

Terra Power Tools - Lite Edition allows you to perform complex volume calculations between multiple Autodesk® AutoCAD® Civil 3D® surfaces using material tables.

Terra Power Tools - Professional Edition allows you to perform complex volume calculations between multiple Civil 3D surfaces using material tables, visualize results in 3D, and much more...

Batch create files with surfaces with PNEZD text and csv files

Generates 3D model from cross-sections and unfolds it into flat pattern.

This plug-in sets cross hairs at a slope specified using Angle, Rise/Run or Percent Grade.

Draws normal (perpendicular) vectors of 3D Faces, finds backfaces, flips 3D Faces (front/backface).

CADext provides crossing utility drawing, layer order based draw order, attribute data attaching, and table export for users who would like to maximize the value of their CAD system.

Breaks the selected dimensions by the specified points

Merge surfaces end-to-end with smooth blending across gaps and transitions; Use SmartPaste to combine surfaces with interior voids.

This tool allows you to add labels to all contours more easily.

TBN2CAD is a package of plugins for AutoCAD® to work with maps and images and also ease some design procedures.