Synology Inc. (Chinese: 群暉科技; pinyin: Qúnhuī Kējì) is a Taiwanese corporation that specializes in network-attached storage (NAS) appliances.

In 2018, product review website Wirecutter described Synology as a "longtime leader in the small-business and home NAS arena," albeit still a newcomer in the field of Wi-Fi routers.

Three years after founding the company, they shifted from exclusively licensed software to adding hardware design and production,[3] since the hardware partners who had licensing the software had inconsistent quality control;[4] diagnosing failures required Synology's active participation, and as a new company, Synology had difficulty in gaining trust and recognition.

[2][5] To expand its market share in the United States, Liao decided to send gift baskets to popular review outlets, containing custom-printed chocolates with the Synology name.

[3] Synology expanded beyond its roots in peripheral storage market by introducing a cloud service in 2017, initially using three data centers in Frankfurt, Germany.

[11] Consumer- and small/home business-oriented NAS products by Synology are sold under the DS (DiskStation) line, while larger businesses may choose the RS (RackStation) line of rack-mounted units; the corresponding expansion chassis include the DX (Disk eXpander) and RX (Rack eXpander), introduced in 2009.

In a review for SmallNetBuilder, Jim Buzbee was "impressed with the maturity of the DS-101's software and documentation" but felt the main negatives were "high cost and limited availability".

[14] In addition, Synology sells FS/FX (FlashStation), HD (High Density), SA (Scalable Architecture), and UC (Uptime Critical) networked storage products for larger businesses, housed in rack-mountable units.

[15] In 2014, a piece of ransomware emerged, dubbed "Synolocker," that targeted Synology NAS devices running DSM versions 4.0, 4.2, and 4.3.