[jrcplus]

Scrappy co-creator here. It was a surprise to us that this blew up on HN. We've hurriedly added an FAQ to the write-up.

In regards to this question about the "Scrappy backend": Scrappy is local-first, so data is stored locally in your browser, and optionally replicated to a lightweight sync server, to help coordinate syncing between peers. In other words, Scrappy is almost entirely front-end. The only third-party dependencies are Yjs <https://yjs.dev/> and CodeMirror <https://codemirror.net/>. We don’t use any other libraries or frameworks like React. There’s no analytics.

And there's no traditional backend. The only cloud dependency is the sync server, which is a plain vanilla y-websocket-server <https://github.com/yjs/y-websocket-server/>.