The Norns ecosystem is open source under the MIT license: norns, norns-core, norns-ui, norns-app and norns-demo are all on GitHub.
Norns is a flavored stack (Civet, Pug-flavored Svelte 5, SvelteKit) engineered so AI writes applications with 20 to 25% fewer tokens. Less boilerplate per unit of logic means the same context window holds more of your application, generation runs faster, and costs drop with token counts.
Start with the norns-app template: one command scaffolds a full runtime demo you can rewrite in a sitting.