The best example I know of a purely client-side web app that makes effective use of local storage is the Pinafore [1] client for Mastodon. Edit: And it's worth

The best example I know of a purely client-side web app that makes effective use of local storage is the Pinafore [1] client for Mastodon. Edit: And it's worth noting that this app is a labor of love by an expert web developer, i.e. the antithesis of a typical corporate project. [1]: https://pinafore.social/ https://pinafore.social/