I think the real solution is for Safari, and apps like it, to allow side-by-side viewing of tabs on devices that have a &quot;large enough&quot; display.<p>There&#x27;s no reason this needs to be an OS feature, and at least one good reason why it shouldn&#x27;t be: data integrity. Threading is hard enough for most programmers to get right, and now you want to require IPC and&#x2F;or coordinated access to every apps&#x27; data files?<p>I love that this is already being provided by an enterprising app developer, but I hope they get Sherlocked.