postmessage-promise is a client-server like, WebSocket like, full Promise syntax (postMessage.then etc.) supported postMessage library. 一个类 client-server 模式、类 WebSocket 模式、全 Promise 语法支持的 postMessage 库

A system for making postMessage asynchronous

Ruto is a library that streamlines communication between browser window to iframes or popups. It uses client server design pattern

A small library to make two-way communication between a VS Code extension host and a React webview simple and type‑safe. Supports both UDF reducer and RPC promises.