TurtleStitch is a visual, blocks-based programming environment for turtle graphics with a primary focus on embroidery.

Generated graphics can be exported as a embroidery file (currently Melco/EXP and Tajima/DST are supported) and SVG images.

TurtleStitch is based on Snap! Build Your Own Blocks written by Jens Mönig and Brian Harvey.

It uses webgl ThreeJS as rendering engine for performance as smooth as possible.

TurtleStitch is live on its community platform - http://www.turtlestitch.org

http://www.turtlestitch.org/run

the latest development version is live here:

http://www.turtlestitch.org/beta

You can also try the latest stable version from the git master branch via github pages (no cloud access!) or download it and run it offline

Snap! Build Your Own Blocks [http://snap.berkeley.edu] is a visual, blocks based programming language inspired by Scratch

The definitive source of how to use Snap! is the Snap! Manual.

• API.md describes the API for modifying the Snap! interface.
• Extensions.md describes the basic interface for building JavaScript extensions for Snap!
• Migrating.md gives guidance for older extensions to migrate to Morphic 2 and Snap! v6.
• Offline.md has instructions for running Snap! as a progressive web application.

Please read the Contribution Guidelines before making an issue or pull request. Thanks!

Copyright (C) 2008-2025 by Jens Mönig and Brian Harvey Copyright (C) 2008-2025 by Michael Aschauer

Snap! is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License for more details.

You should have received a copy of the GNU Affero General Public License along with this program. If not, see https://www.gnu.org/licenses/.

Want to use Snap! but scared by the open-source license? Get in touch with us, we'll make it work.