http://usagib6danuxndqle3usrweloyskdeoelthqizr6wl7u3tnsmfwho5ad.onion/prog/M45BLLIH
It's a project I've been working on, a fork of jschan that uses a P2P database system called Peerbit:
https://www.gitgud.io/threshold862543/peerchan
Right now it's kind of a hybrid model with a traditional http interface, but posts and files can also be posted, seeded, and downloaded via the P2P client:
https://www.gitgud.io/threshold862543/peerchan-peer
Still have a lot to do with it, but it's getting there bit by bit.