@finner The readme clearly needs work (it does) :)
In a nutshell: it’s a system for building and deploying peer-to-peer web applications (small web) that can communicate with each other using end-to-end encryption.
Simple/early example: https://ar.al/2023/02/20/end-to-end-encrypted-kitten-chat/
However, since that’s layered onto the regular web features and uses plain web tech, you can also build old school web apps that don’t necessarily make use of the p2p features.