@sanity/comlink
A library for one-to-many cross-origin communication between Window contexts, built on the postMessage API.
window-post-message-proxy
A library used in place of the native window.postMessage which when used on both the sending and receiving windows allow for a nicer asynchronouse promise messaging between the windows
@superset-ui/switchboard
Switchboard is a library to make it easier to communicate across browser windows using the MessageChannel API