I've been working on projects like this for some time and that particular project happened to make the Hacker News front page but was not the client files that I'm referring to here, but rather a server. It was a side project to play with a redbean, since I'm a fan of jart's work.

My primary saver is a Python script that I wrote called Notedeck, but I also sometimes use a Rust webdav server called dufs.

I haven't released either of my projects I'm working on that are the client files, otherwise I would have just linked them.