WinShun is a free, open-source Windows productivity launcher and search utility designed as a modern alternative to Everything and Listary. By reading the NTFS Master File Table (MFT) directly, it indexes millions of files in seconds and delivers sub-millisecond search results with deep support for both English queries and Chinese Pinyin matching. In addition to file names, WinShun performs full-text document searches (Office, PDF, text, and code), offers a robust clipboard manager, seamlessly integrates into Windows Open/Save file dialogs, and includes an extensible plugin ecosystem. It also acts as an MCP server, allowing AI assistants like Claude and Cursor to safely search local files and document contents directly through structured tool calls.