File Station gives DSM users access to shared folders on the NAS over the Internet. Launching two or more File Stations also allows you to manage all DiskStation data by dragging and dropping between different File Stations.
Photo Station
Photo Station is an online photo album with an integrated blog. It makes sharing of photos and videos over the Internet a breeze. The package also offers support for all popular social networking sites, and you can browse photos saved to your NAS via a major browser or mobile device.
Audio Station
Audio Station is a web-based audio application. It gives you access to Internet radio, or the music on your NAS, and allows you play music over your computer and iOS/Android device. Audio Station also supports streaming to media rendering and AirPlay devices. The embedded music player also supports the creation of a personal library for each individual account.
Download Station
Download Station is a web-based download application. It allows you to download files off the Internet through BT, FTP, HTTP, NZB, and eMule without the need of a client PC. In other words, the files are downloaded directly to the specified NAS folder.
Download Station allows you to download files from file-hosting sites. You can also search for torrent files through the system's default search engines or those you add yourself through the BT search function.
Surveillance Station
NAS servers are lately being used for security applications, including surveillance solutions. Synology's Surveillance Station offers many monitoring options and supports a huge range of IP cameras. It is basically a web-based application that can manage IP cameras to protect your environment. With it, you can watch and record live videos, setup scheduled recordings, and playback recorded events via a web browser or mobile device, and it can send notifications whenever important events occur.
The DS713+'s capable hardware allows it to support up to 20 HD IP cameras, while the surveillance application supports up to 36 channels @ 720p with live-view displays, or 49 channels @ D1 with live-view displays. It also allows for pan, tilt, and zoom and has digital zoom support. Its video quality settings include image quality, motion detection, and I/O alarm, and the intelligent video analysis includes virtual fence, tally counter, no-idle zone, motion detection, missing object, foreign object, camera occlusion, and focus lost.
Unfortunately, only one license is provided for free, so you have to buy additional ones if you plan on using multiple IP cameras.