https://github.com/holepunchto/hypercore

Hypercore is an evolution of DAT.

(See also: https://awesome.datproject.org/)

It's one of the most interesting and promising things Aram Zucker-Scharf has seen in a decade.

From the official site: Hypercore is a distributed append-only log

Hypercore comes with a secure transport protocol, making it easy to build fast and scalable peer-to-peer applications. Think lightweight blockchain crossed with BitTorrent.