OpenHypertext is the short name of "Openfree Hypertext".
It is a hypertext without any restriction.
About Wiki and Opern HyperText
Wiki is just a hypertext.
There were numerous hypertext application before Wiki that were used in PCs and Apple. Younger generations do not know and they think wiki is something unique or a concept that is distinct.
The closest thing to Wiki in terms of its scope is 'www'. Just slightly easiter to edit world wide web.