Side note, selecting frontend frameworks from the sidebar gives the same list but the URL stays https://openbase.io/categories - URL should update.
You're right about the selecting categories from the sidebar not updating the URL, we haven't implemented the routing yet, that is something that we'll implement soon.
https://github.com/sveltejs/svelte and https://github.com/ryansolid/solid stands out by being the only 2 that are compiled to standard js, so no framework is loaded at runtime.
Speed is important too and https://github.com/infernojs/inferno (and solid above) is well known for speed and is backed by benchmarks.
Not sure if you want to add more beyond this point since a few more will push the boundary to just include everything which is over 100 nowadays.