LibreCAD is a cross-platform 2D CAD program. It can read DXF and write DXF/PDF/SVG files, with initial support for DWG reading. It supports point/line/circle/ellipse/parabola/hyperbola/spline primitives. The GUI is highly customizable, and has dozens of translations.

A python parametric CAD scripting framework based on OCCT

Fast and minimalist 3D viewer.

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 creating ready-to-print 3D designs.

3D CAD viewer and converter based on Qt + OpenCascade

📐⚙ 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).

An open source harness for generating CAD models

.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.

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

A dxf viewer for the browser using three.js

A simple CAD package using signed distance functions

The world’s first fully web-based DXF/DWG viewer and editor that runs entirely in the browser — no backend server required.

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.

Online CNC CAM System

Visible geometry edge projection and flattening based on three-mesh-bvh.

Simple CAD program

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