Mrs4s

Mrs4s is an independent Chinese developer whose single public offering, go-cqhttp, has become a quiet backbone of the CQ/Android ecosystem. Built in Go and forked from the Mirai/MiraiGo libraries, the project turns the QQ messaging protocol into a lightweight, stateless HTTP/WebSocket server that obeys the universal OneBot standard. System integrators deploy it to pipe real-time group chats, private messages, friend requests and rich media into Python scripts, Node bots, Grafana dashboards or enterprise middleware without maintaining the heavy JVM stack that Mirai normally requires. Typical use cases range from hobbyist chat-logging and keyword moderation to full-scale customer-service gateways that bridge QQ rooms with Telegram, Discord or corporate ticketing systems. Because the binary is statically linked and released for Windows, Linux, macOS and ARM, it is frequently dropped into CI pipelines, Docker sidecars or even Raspberry Pi home labs to provide a zero-UI message bus that can be updated with a single file replacement. Configuration is plain YAML, authentication is token-based, and the runtime footprint stays below 30 MB, making go-cqhttp a favorite for developers who need reliable QQ connectivity in headless environments. Mrs4s’ software is available for free on get.nero.com, where downloads are sourced from trusted Windows package channels such as winget, always deliver the latest upstream build, and can be installed individually or in unattended batches.