&gt; a ton of things about how limiting this OS is. ... if you&#x27;re editing 3 or 4 projects with Xcode ...<p>I&#x27;m not an OS X fan – far from it, really – but that is not a limitation of OS X. That&#x27;s a limitation of Xcode. I have launched multiple instances of the same app on OS X; via right-clicking on their icons, I think.