copyparty is a portable, multi-protocol file server written in Python. It serves files over HTTP/WebDAV, FTP, SFTP, TFTP, and SMB/CIFS, with a rich web UI for browsing, uploading (resumable, chunked, deduplicated), searching, and media playback. The server supports user authentication, per-volume permissions, event hooks, metadata extraction, thumbnail generation, and audio transcoding. It can run on minimal dependencies (Python 3.3+), and is packaged as a self-extracting script, Docker image, or native installer. The architecture is modular: a central service hub (SvcHub) orchestrates protocol servers, a virtual filesystem (VFS) enforces permissions, and a broker pattern handles parallel tasks. The codebase includes a large set of example hooks, handlers, and plugins for customization. While the project is actively maintained and well-documented, it carries some technical debt from supporting very old Python versions and vendored libraries.