Thanks! The landing page is Next.js with Tailwind. As for Crux itself, we're currently building on the opencode harness, and down the line we want to write our own so we can shape it around the goals we've set for the product.

Would genuinely love it if you gave the app a try and told us how it holds up for you. If you run into any issues, let us know, that kind of feedback would mean a lot in making Crux better.