The history of wikis dates from 1994, when Ward Cunningham invented the concept and gave it its name. c2.com thus became the first wiki, or a website with pages that can be edited via the browser, with a version history for each page. Before 1995 however, there were several historical antecedents to wikis, including Vannevar Bush's proposed "memex" system in 1945, the collaborative hypertext database ZOG in 1972, and the Apple hypertext system HyperCard in 1987; though the creation of true wikis only became possible with the development of the World Wide Web in the early 1990s.