Because there is no cloud service that is required, there are no accounts nor any file size limits. Transfer speeds for files are never throttled, so you can share anything and everything you want to. KEY FEATURES INCLUDE: Available for numerous operating systems such as; Windows, OS X, Linux, iOS, Android, Windows Phone, NAS devices and more. Data is transferred directly from device to device. Every connection is encrypted and secured. Sync has been constructed in such a way as to ensure that you are always in complete control of your files. Your files are never duplicated onto third party servers.