[1945] Vannevar Bush (Science Advisor to president Roosevelt during WW2) proposes Memex. [1965] Ted Nelson coins the word “Hypertext” [1967] Andy van Dam et al build the Hypertext Editing System and FRESS [1968] Doug Engelbart demos NLS system at FJCC [1975] ZOG (now KMS) at CMU. [1978] Aspen Movie Map, first hypermedia videodisc, MIT. [1984] Filevision from Telos: hypermedia database for Macintosh [1985] Symbolics Document Examiner, Janet Walker. [1985] InterMedia, Brown University, N. Meyrowitz [1986] OWL introduces Guide, first widely available hypertext [1987] Apple introduces Hypercard, B. Atkinson. [1987] Hypertext’87 Workshop [1990] ECHT (European Conference on HyperText)

Hypertext is text which is not constrained to be linear. Hypertext is text which contains links to other texts. The term was coined by Ted Nelson around 1965 (see History ).

HyperMedia is a term used for hypertext which is not constrained to be text: it can include graphics, video and sound , for example. Apparently Ted Nelson was the first to use this term too.

Hypertext and HyperMedia are concepts, not products.