What's free, what's shared, what's reserved.
SOE is one project with four kinds of thing in it, and they're licensed differently on purpose.
The Life Field and the Torus Simulator are free for everyone: study, classroom use, exploration, and sharing. Use them as much as you like. No sign-up, no paywall, no advertising.
The studio code is open source under the MIT licence — read it, learn from it, fork it, build on it. It stands on open foundations (Three.js, standard physics), and it's yours to check and extend. A credit is appreciated, not required.
Recipes contributed to the gallery are published under Creative Commons Attribution 4.0. Anyone may reuse and remix a recipe, with credit to whoever made it. That's what keeps the gallery a commons.
The visual studies SOE produces — the films, the stills, the audio, and everything after — remain copyright SOE, all rights reserved. Please don't copy, redistribute, or sell them without permission. Licensing and commission enquiries are welcome.
SOE is free and ad-free, and means to stay that way. Running costs are small; new studies and features take time. If the work earns a place in your study or your teaching, you can leave a tip — entirely optional, and the tools stay free either way.