&gt; If Apple ever decided to change mac os x to no longer allow external applications, I would switch to Linux right away.<p>Even if that did happen, which it wouldn&#x27;t, what would stop you from compiling the application yourself, theoretically? If Apple computers allow for compilation of their own software, which they probably always will given that a Mac is the only way you can make OS X or iOS apps at this time, then OS X will never get to a point like the iPad wherein you are very limited in what you can do.