About Cadelo

Cadelo is a free, browser-based CAD application for 2D drafting and 3D modeling. It is built on OpenCADStudio, an open-source CAD application written in Rust, compiled to WebAssembly so it runs entirely in your browser with GPU acceleration (WebGPU, with WebGL2 fallback).

Why we exist

Professional CAD tools cost hundreds per year, or force you into accounts, trials, and proprietary clouds. We think drafting should be simpler: open a URL, draw, export a DWG. No install, no signup, no license server.

The site is funded by unobtrusive advertising. That's the whole model: every feature is free, ads never cover your drawing, and your files never leave your device.

Technology

• Engine: OpenCADStudio (Rust) — DWG/DXF read/write (R13–R2018), STL/STEP/OBJ/PDF export
• UI: iced (Rust GUI framework)
• Rendering: wgpu — WebGPU with WebGL2 fallback, 4× MSAA
• Web packaging: Trunk + wasm-bindgen + WebAssembly

License

Cadelo is free software: you can redistribute it and/or modify it under the terms of theGNU General Public License version 3 (GPL-3.0). This is inherited from the upstream OpenCADStudio project.

Read the full GPL-3.0 license ·Source code on GitHub

You are free to use this software for any purpose, modify it, and share it — provided any distributed modifications are also licensed under GPL-3.0 and source is made available.

Acknowledgements

Thanks to the OpenCADStudio project and its contributors, the Rust ecosystem (iced, wgpu, acadifc), and the open-source community that makes free CAD possible.