LibreCAD is a cross-platform 2D CAD program written in C++14 using the Qt framework. It can read DXF and DWG files and can write DXF, PDF and SVG files. The user interface is highly customizable, and has dozens of translations.

A python parametric CAD scripting framework based on OCCT

JSCAD is an open source set of modular, browser and command line tools for creating parametric 2D and 3D designs with JavaScript code. It provides a quick, precise and reproducible method for generating 3D models, and is especially useful for 3D printing applications.

Fast and minimalist 3D viewer.

📐⚙ 2D vector line drawing and shape modeling for CNC and laser cutters.

QCAD - The Open Source 2D CAD. QCAD is a cross-platform CAD solution for Windows, macOS and Linux. It supports the DXF format and optionally the DWG format (through a proprietary plugin).

3D CAD viewer and converter based on Qt + OpenCascade

.net dxf Reader-Writer

A GCode sender (not only for lasers or plotters) for up to two GRBL controller. SVG, DXF, HPGL import. 6 axis DRO.

A dxf viewer for the browser using three.js

A simple CAD package using signed distance functions

AutoCAD Code Pack: A powerful library that helps you to develop AutoCAD plugins using the AutoCAD .NET API

LibreCAD 3 is a next generation 2D CAD application written to be modular, with a core independent from GUI toolkits. Scripting is possible with Lua.

C# library to read/write cad files like dxf/dwg.

Online CNC CAM System

Simple CAD program

Program for preparing G-code for milling of printed circuit boards on CNC. You can use it as a converter to a PDF file.

Minimalist computer aided design (CAD) software

Successor of https://sourceforge.net/projects/libdxfrw/, developed for LibreCAD, by LibreCAD Contributors, usable for all

Examples and demos for gemini-viewer sdk, which is a WebGL based BIM model viewer, built on three.js. It is used to view dwg/dxf, gltf, obj, ifc models, etc.