The H Online reminds us that 20 years ago CERN in Geneva gave Tim Berners-Lee and Robert Cailliau official permission to release the libwww library free of charge, according to Berners-Lee, “to create a server or a browser, to give it away or sell it, without any royalty or other constraint”.
Since then this act of altruism on the part of CERN has had a profound effect on the world of communications. libwww (Library World Wide Web) is a highly modular client-side web API for Unix and Windows, as well as being the name of the reference implementation of this API. It can be used for both large and small applications, including web browsers/editors, robots and batch tools.
Its more modern replacement is considered to be libcurl.
You can read more about libwww on Wikipedia.