Which command is used to download files from a remote source besides scp?

The command used to download files from a remote source besides scp is wget. This utility is specifically designed for non-interactive downloading of files from the web. It supports HTTP, HTTPS, and FTP protocols, making it versatile for fetching files from various remote sources. wget can handle recursive downloads, meaning it can download entire web pages along with all the elements (like images and CSS files) required to display the page fully, which is particularly useful for mirroring websites.

In contrast, the other options are not relevant for downloading files. zip is a compression tool used to create an archive of files, ls is a command for listing directory contents, and mkdir is used for creating new directories. These commands serve different purposes that do not involve downloading files from remote sources.