The Karluk languages (also known as the Qarluq or Southeastern Common Turkic languages) are a sub-branch of the Turkic language family that developed from the varieties once spoken by Karluks. Many Middle Turkic works were written in these languages. The language of the Kara-Khanid Khanate was known as Turki, Ferghani, Kashgari or Khaqani. The language of the Chagatai Khanate was the Chagatai language. Karluk Turkic was spoken in the Kara-Khanid Khanate, Chagatai Khanate, Yarkent Khanate and the Uzbek-speaking Khanate of Bukhara, Emirate of Bukhara, Khanate of Khiva and Khanate of Kokand.