Wget

GNU Wget is a computer program that implements simple and powerful content retrieval from web servers and is part of the GNU Project. Its name is derived from World Wide Web and get, connotative of its primary function. It currently supports downloading via HTTP, HTTPS, and FTP protocols, the most popular TCP/IP-based protocols used for web browsing.

Its features include recursive download, conversion of links for offline viewing of local HTML, support for proxies, and much more. It appeared in 1996, coinciding with the boom of popularity of the web, causing its wide use among Unix users and distribution with most major Linux distributions. Written in portable C, Wget can be easily installed on any Unix-like system and has been ported to many environments, including Mac OS X, Microsoft Windows, OpenVMS and AmigaOS. Competitive tools include cURL.

It has been used as the basis for graphical programs such as Gwget for the GNOME Desktop. Released under the terms of the GNU General Public License v3, Wget is free software.