A number of other multi-axis models of political thought exist and some are based on similar axes to "The Political Compass," most famously the Nolan Chart, developed by the American libertarian, David Nolan. A similar chart appeared in 1970 in "The Floodgates of Anarchy" by Albert Meltzer and Stuart Christie and in 1968 in the "Rampart Journal of Individualist Thought" by Maurice C. Bryson and William R. McDill. Other online political quizzes also use the same two axes to improve upon the more primitive left-right political spectrum, such as iSideWith.com.