A symbolic mathematics system for group theory written by John Cannon of the university of sydney, Australia in 1976.

Cayley was used at about 100 sites but has been superseded by a much more general system, magma.

["An Introduction to the Group Theory Language CAYLEY", J. Cannon, Computational Group Theory, M.D. Atkinson ed, Academic Press 1984, pp. 148-183].

Current version: V3.7, for sun, apollo, vax/vms.