Just launched Datasette Apps - a plugin for Datasette that lets you host full HTML+JS apps in an iframe sandbox that can query your database and do interesting things with your data https://simonwillison.net/2026/Jun/18/datasette-apps/
Lots more information in this post on the Datasette project blog, including details on our live demo and uv one-liners you can use to try this out on your own machine https://datasette.io/blog/2026/datasette-apps/
Think of this as Claude Artifacts reimagined for Datasette - you get all the power of artifacts but with a JSON API to a full relational database, allowing your HTML+JS apps to access and store data in all shapes and sizes