Dev environments. In your web app. From interactive tutorials to full-blown IDEs, build instant, interactive coding experiences backed by WebContainers: the trusted, browser-based runtime from StackBlitz.
You may also be interested in ...
Toast UI
TOAST UI is a JavaScript UI library to make your web delicious. It's a free open source project.
Mozaic
Mosaic is a declarative front-end JavaScript library for building user interfaces.
Email know how to run
Here is a fun little email signup form using splitting.js design by Adam Kuhn. The email characters you type in literally grows legs and runs into the signup button!