José R.C. Cruz, «Mastering Threads on Mac OS X» : «The POSIX thread library (…) is platform-agnostic, and available on all POSIX-compliant systems such as Linux, BSD, and Mac OS X.»
Daniel Robbins, «POSIX threads explained», IBM developerWorks : «When you want to write portable multithreaded code, code that works under Solaris, FreeBSD, Linux, and more, POSIX threads are the way to go.»