Synology’s primary product is the Synology DiskStation Manager (DSM), a Linux based software package that is the operating system for the DiskStation and RackStation products. The Synology DSM is the foundation of the DiskStation, which integrates the basic functions of file sharing, centralized backup, RAID storage, multimedia streaming, virtual storage, and using the DiskStation as a network video recorder. Synology also provides free mobile applications for its users, including support for iOS, Android, Windows Phone, and Kindle Fire. Synology offers frequent updates to its DSM, with major updates happening twice a year and minor updates throughout the year. As of January 2016, Synology has provided these updates free-of-charge, and they are available for DiskStations for as long as the hardware can support the newer functions of the DSM.