Apache HTTP server (about page)
[…] We believe that the tools of online publishing should be in the hands of everyone, and that software companies should make their money by providing value-added services such as specialized modules and support, amongst other things.
To the extent that the protocols of the World Wide Web remain "unowned" by a single company, the Web will remain a level playing field for companies large and small. Thus, "ownership" of the protocols must be prevented. To this end, the existence of robust reference implementations of various protocols and application programming interfaces, available free to all companies and individuals, is a tremendously good thing.”