This page performs a live, annotated https: request for its own source. It’s inspired by The Illustrated TLS 1.3 Connection and Julia Evans’ toy TLS 1.3.
It’s built on subtls, a pure-JS TLS 1.3 implementation that depends only on SubtleCrypto. Raw TCP traffic is carried via a WebSocket proxy.

Key Raw bytes in hexadecimal. Outgoing message annotations. Incoming message annotations.

A protocol detecting server, based off the serve2 library

Secure messaging for everyone, coming soon
With the rise of widespread government monitoring programs, Tox is an easy to use application that allows you to connect with friends and loved ones without anyone else listening in.

pidgin plugin: http://tox.dhs.org/