If you are afraid to use Onyx to clean your osx system, CleanMyMac is a good alternative to keep your operating system clean and healthy.CleanMyMac makes space for the things you love. Sporting a range of ingenious new features, CleanMyMac 2 lets you safely and intelligently scan and clean your entire system, delete large, unused files, reduce the size of your iPhoto library, uninstall unneeded apps or fix the ones that started to work improperly, manage all your extensions from one place and do much more – all from one newly designed and beautifully simple interface.