Soulskill from the sure-thing-sweetheart dept.
An anonymous reader writes "After having Wine to run Windows binaries on Linux, there is now the Darling Project that allows users to run unmodified Apple OS X binaries on Linux. The project builds upon GNUstep and has built the various frameworks/libraries to be binary compatible with OSX/Darwin. The project is still being worked on as part of an academic thesis but is already running basic OS X programs."
The best book on programming for the layman is "Alice in Wonderland";
but that's because it's the best book on anything for the layman.