Android, iPhone, BlackBerry or Windows Phone? The decision isn\u2019t an easy one. But it might get easier in the near future, thanks to a hacktivist culture that's going mainstream.\n\tDevelopers and hackers are working on projects, or they're already available, that will run Android apps on BlackBerry 10 phones, Windows 8 PCs and Mac computers. And they're working to enable Android devices to run Windows software, and Windows machines to run iPad apps. It\u2019s too soon to say if some of these will actually work well. And of course, virtual\/remote desktop and other software services already enable you to run Windows on iOS and Android machines. But here\u2019s a quick look at the growing cross-pollination of mobile and desktop operating systems.\n\tAndroid Apps on Windows 8 PCs and Macs\n\tThe BlueStacks\u2019 Android App Player is free software that lets you run Android apps in emulation mode on Windows 8 and Mac OS X computers. You don\u2019t have to toggle between OS environments; just click an Android app icon to launch it. BlueStacks has been available for a while, but its Windows 8 and Mac software (both in beta) are fairly new.\n\tAndroid Apps on BlackBerry PlayBook and BlackBerry 10\n\tBoth the BlackBerry PlayBook tablet and the new BlackBerry 10 OS, revealed last week to much fanfare, feature a runtime "Android Player" that lets Android apps run on PlayBooks and BlackBerry 10 devices. Android apps need to be modified or "repackaged" to run on BlackBerrys, but the process isn't particularly difficult for developers. Not all Android apps are compatible with the BlackBerry player, either, and users need to "sideload" many of them manually. (The first BlackBerry 10 devices will be available in the United States in mid-March.)\n\tWindows Software on Android\n\tThe Wine project recently showed off an early version of Wine for Android. Wine is free, open-source software\u2014not an emulator\u2014that\u00a0lets you run Windows software on non-Windows machines, including Linux computers. The project\u2019s lead developer says you\u2019ll be able to use Wine to run native Windows software applications on an Android tablet in the near future. Wine will be free. Given how Wine currently works, however, you probably won\u2019t be able to run every Windows program, at least not without some tweaking. (Keep in mind you can already run Windows apps on Android and iOS devices using services such as OnLive Desktop, but not for free.)\n\tiPad Apps on a Windows PC\n\tApple\u2019s iOS is a walled garden, but hackers love to scale those walls just the same. Case in point: The freeware iPadian, which promises to let you run iPad apps on a Windows computer via Adobe Air. You don't get access to the official Apple app store, not surprisingly, but iPadian has its own app store. It sounds intriguing, but for security reasons I recommend proceeding with caution.\n\tAre you running a mobile OS on your desktop computer, or vice versa? If so, how? And what has been your experience?