# calibre-server > A server application that can be used to distribute ebooks over a network. > Ebooks must be imported into the library using the GUI or calibredb before. > Part of the Calibre ebook library. > More information: . - Start a server to distribute ebooks. Access at http://localhost:8080: `calibre-server` - Start server on different port. Access at http://localhost:port: `calibre-server --port {{port}}` - Password protect the server: `calibre-server --username {{username}} --password {{password}}`