Sinomac is a web site based in Qingdao, People's Republic of China. It is also an Apple-recognised Macintosh user group. It is known for localising Macintosh software, often churning out simplified Chinese software. In 2003, it released the very popular isQ, which turned Final (version 1.0) in late December 2004. This enabled Macintosh users under Mac OS X to use QQ, a popular IM platform on mainland China. Sinomac has a content partnership agreement with the Beijing Macintosh User Group and authorises CNAD-union.org to distribute its iSQ software.