Tim Berners-Lee, a British computer scientist working at CERN, the European particle physics laboratory, developed the core technologies of the World Wide Web between 1989 and 1991: HTML for structuring documents, HTTP for transferring them, and URLs for addressing them, along with the first web browser and web server. His original proposal, circulated at CERN in March 1989, was aimed at solving a fairly narrow institutional problem — making it easier for CERN's international community of physicists to share and link research documents — rather than at building what became a global information medium.
The technology's release to the wider world happened in stages. CERN made the Web's source code available in 1991, and in April 1993, following sustained advocacy from Berners-Lee and colleagues, CERN's directors formally placed the underlying WWW technology into the public domain, releasing it royalty-free, with no licensing fees or usage restrictions, for anyone to use, build on, or commercialize. Berners-Lee has said in multiple interviews since that he pushed hard for this outcome specifically because he had watched a competing hypertext technology, Gopher, lose momentum after the University of Minnesota, which had developed it, began charging licensing fees in 1993 — a cautionary example that happened almost simultaneously with CERN's own decision and, by Berners-Lee's own account, directly informed it.