LRailplan是一款专业的铁路平纵横设计一体化软件，覆盖新建和改建铁路全项目类型。全过程项目化管理，单元法定线，支持既有线平纵拟合重构、自定义横断面设计、点云建模等。适用于铁路、地铁等项目的线路设计。工欲善其，必先利其器！

BackToCAD Publisher is a stand-alone converter that allows the CAD user to convert hundreds of DWG/DXF, ACIS (SAT), PRC files into 2D PDF, 3D PDF, and PRC (3D PDF or CAD Input).

Length, area, volume. Select, calculate, copy to clipboard, insert combined with any text as plain text, field, table, (dynamic) block, or simply export to TXT, CSV or JSON file.

Generate dynamic QR Codes from DWG texts and fields.

Extract, organize, and insert object properties from your selection in Autodesk® AutoCAD® directly to the selected cell in your active Excel sheet.

This app is a powerful tool developed using VB.NET that allows you to count the number of each object and export the values to an Excel file.

Calculates the Total Length and Total Area of multiple objects of selected type(s) and exports the values to an Excel file.

Length, area, volume. Select, calculate, copy to clipboard, insert, combined with any text as plain text, field, table, (dynamic) block, or export to TXT, CSV, or JSON file.

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

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

Leading Civil Engineering and Surveying Solution

Create slope pattern between selected edges.

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

Set up real-time rendering between Autodesk® AutoCAD® and Lumion, and your architectural rendering workflows will never be the same again.

CADtoWIN extends the Microsoft SharePoint functionality inside of Autodesk® AutoCAD®.

Dynamically draws diagrams on Autodesk® Civil 3D® tin surfaces to help visualize possible directions from a given point within preset grade limits.

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

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

Reinforced concrete detailing software and automatic bar bending schedules.

MeteorCalc 3D is a block constructor that allows you to create 3D visualization blocks for street lighting installations. MeteorCalc 3D is a free part of software for street lighting - MeteorCalc SL

Bring Google Maps into Autodesk® AutoCAD® & Civil 3D® for FREE. Instantly georeference your drawing, access key Google Earth tools, & explore your site with real-world clarity. No GIS skills needed.

Replaces the object linked to a field, preserving all the other field's settings.

Calculates the Total Length/Area of multiple objects of selected type(s). Inserts labels and specifications of the selected objects.

A highly intuitive tool to help CAD users markup, comment on, and share project information with others. You can create slides, record narrations, export your markups to PDF, and more.