In the late '80s, every Mac came with Hypercard, a program that let you build individual "cards", organized into "stacks", linked together by clickable buttons; it's easy to see these as the prototypes of pages and Web sites. But HyperCard stacks stayed on the user's computer; there was no networking involved.
HyperCard enjoyed a minor heyday, but once the concept made the leap to the network, HyperCard quickly became outdated. Bill Atkinson, who developed the software, once contemplated: "I grew up in a box-centric culture at Apple. If I'd grown up in a network-centric culture, like Sun, HyperCard might have been the first Web browser."