A lessor Known fact about Apple and OS X..

Linux might be the most popular open source OS, but it was definitely not the first one. The honor of first open-source operating system goes to Bill Joy's first version of BSD Unix. When Unix first showed up in 1969, it was open source which was later closed. But the first fork BSD kept the free software tag with it. Besides the basic BSD distros like FreeBSD, OpenBSD, and NetBSD, Solaris and Mac OS X also got their start from BSD Unix.