Why won't Apple want WebKit everywhere? The value of a html rendering engine is proportional to the number of clients running it (especially in 2003 when the project was announced). The fact that WebKit has become large enough that it can't be ignored (thanks to multiple vendors using it in their browsers) is a huge boon for Apple.<p>LLVM, Clang, Darwin, libdispatch and many others are all liberally-licensed open source projects that Apple leads. More contributions are listed at <a href="http://www.apple.com/opensource/" rel="nofollow">http://www.apple.com/opensource/</a>.<p>This isn't because Apple cares about software freedom, it's a simple calculation: these are components of the system that need to be high quality, but don't differentiate the product. If using and contributing to open source software makes the systems programming simpler, the business case has been made.