Software wars

operating system that operates a mobile device

thumb|upright=2|Diagram demonstrating big- versus little-endianness

competition between web browsing applications for share of worldwide usage

computer programming convention

rivalry between users of Emacs and Vim

struggles between vendors of the Unix computer operating system in the late 1980s and early 1990s to set the standard for Unix thenceforth

XBill is an arcade style game for the X Window System. The game features a bespectacled character known as "Bill" (a spoof of Bill Gates). The goal is to prevent Bill's legions of clones, referred to as "micro-Bills", from installing "Wingdows", a virus "cleverly designed to resemble a popular operating system" (a parody of Windows), on a variety of computers running other operating systems. It was popular among Linux gamers at the end of the 1990s, selected as Linux Journal reader's second favourite Linux game in 1999.