All human knowledge
Computer scientist Tim Berners-Lee created the World Wide Web. It may be the most significant achievement in the history of humanity; it is certainly the most powerful tool for innovation ever created, allowing access to nearly the sum of all human knowledge with a few simple keystrokes.
Berners-Lee, as is the case with many great innovators, assembled his invention by joining together existing technologies. In his case those technologies were hypertext and the Internet. He created a prototype hypertext database in 1980 for CERN (European Organisation for Nuclear Research) allowing researchers to share information within the organisation. He later had the idea of linking hypertext to the nascent Internet, thus creating a system in which documents and other information stored in a searchable database (hypertext) could be accessed via the global system of interconnected computers (the Internet). info.cern.ch, the world’s first website, went online on August 6th 1991.