Thecus Technology Corporation (Thecus) is a Taiwanese multinational corporation that designs and markets Network-Attached Storage (NAS), Direct-attached storage (DAS), and Network Video Recorders (NVRs). Thecus is best known for producing NAS and creates and designs its own hardware, firmware, and accessory software. Thecus's products are distributed worldwide and localized in several languages. Thecus's headquarters are located in Taipei, Taiwan with subsidiaries located around the world.