The World Wide Web
- 1980s: TBL writes Enquire-Within-Upon-Everything (notes). Nodes, Bidirectional links. Actually closer to a wiki than a web-browser.
- Oct–Dec 1990: Initial protype on NeXT Platform, WYSIWYG editor/browser by TBL (screenshot)
- 1991: First wide-spread browser: "line browser" by Nicola Pellow. Early browsers: Erwise, Midas, Viola-WWW (X) and Cello (Windows)
- First "useful" webapp: CERN made a GW in their legacy phonebook DB.
- 1993: Mosaic browser by Marc Andreessen.