Unix Internet software

Mozilla Firefox, or simply Firefox, is a free and open source web browser developed by the Mozilla Foundation and its subsidiary, the Mozilla Corporation. It uses the Gecko rendering engine to display web pages, which implements current and anticipated web standards. Firefox is available for Windows 10 or later versions of Windows, macOS, and Linux. Its unofficial ports are available for various Unix and Unix-like operating systems, including FreeBSD, OpenBSD, NetBSD, and other operating systems, such as reactOS. Firefox is also available for Android and iOS. However, as with all other iOS web browsers, the iOS version uses the WebKit layout engine instead of Gecko due to platform requirements. An optimized version is also available on the Amazon Fire TV as one of the two main browsers available with Amazon's Silk Browser.

Archie is a tool for indexing FTP archives, allowing users to more easily identify specific files. It is considered the first Internet search engine. The original implementation was written in 1990 by Alan Emtage, then a postgraduate student at McGill University in Montreal, Canada. Archie was superseded by other, more sophisticated search engines, including Jughead and Veronica, which were search engines for the Gopher protocol. These were in turn superseded by search engines like Yahoo! in 1995 and Google in 1998. Work on Archie ceased in the late 1990s. A legacy Archie server was maintained for historic purposes in Poland at Interdisciplinary Centre for Mathematical and Computational Modelling in the University of Warsaw until 2023.