Best Open Source Windows CAD Software 2026

CAD Software for Windows

CAD Windows Creative Commons Attribution Non-Commercial License V2.0 Clear Filters

Browse free open source CAD software and projects for Windows below. Use the toggles on the left to filter open source CAD software by OS, license, language, programming language, and project status.

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1

StarBatch

AutoCad 2014 - AutoCad 2020 batch lisps process

Starbatch is a batch lisp program for Autodesk Autocad drawings. Using StarBatch you can automate AutoCAD to save you time and money. Batch your favourite Lisp's while you complete other tasks.

5 Reviews

Downloads: 1 This Week

Last Update: 2022-06-21
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2

AV3DNavigator

Um simples software de navegação 3D, desenvolvido em Java.

Um simples software de navegação 3D, desenvolvido em Java.

Downloads: 2 This Week

Last Update: 6 hours ago
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3

Autoexe 2015

Autorun enabler for Autodesk Inventor VBA projects

This plugin enable unsupported functionalities for Autodesk Inventor 2014 and above. Autodesk doesn't support Autorun macros for VBA projects anymore, but with this plugin it is still possible to use the commands "AutoOpen", "AutoEdit", "AutoSave", "AutoClose" and "AutoNew" subroutines stored within "Thisdocument" module.

Downloads: 0 This Week

Last Update: 2023-04-19
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4

GBDave's Pipe Size Calculator

HVAC Minimum Pipe Size Calculator

Starting off as a simple LISP command in AutoCAD this HAVC pipe size calculator was migrated to a standalone Java application. Calculates HVAC minimum pipe ID based on GPM and FPS for numerous fluid types (found in the fluid density chart on EngineeringToolbox.com) Includes a table to automatically calculate riser piping sizes per floor. Read the README.txt file included in PipeSize.zip for instructions.

Downloads: 0 This Week

Last Update: 2015-06-27
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