Web Components native in browser JS demo.
It uses lit-element (which uses lit-html) to make Web Components easy, leveraging the shadow DOM for CSS, JS template literals and more.
lightweight JS-only slimmed down archive.org website prototype
A Video Editor Powered by the Web
Popcorn Editor is a forked version of the https://popcorn.webmaker.org website with the server backend ripped out that's made to be embedded in pretty much any website needed.