Some of the iPod's chief competitors during its pinnacle include Creative's Zen, Sony's Walkman, iriver, SanDisk's Sansa, Cowon's iAudio and others. The iPod's dominance was challenged numerous times: in November 2004, Creative's CEO "declared war" on the iPod; that same year, Sony's first hard disk Walkman was designed to take on the iPod, accompanied by its own music store Sony Connect; while Microsoft initially attempted to compete using a software platform called Portable Media Center, and in later years designed the Zune line. These competitors failed to make major dents and Apple remained dominant in the fast growing digital audio player market during the decade. Mobile phone manufacturers Nokia and Sony Ericsson also made "music phones" to rival iPod. Apple's popular iTunes Store catalog played a part in keeping Apple firmly market leader, also helped by the mismanagement of others, such as Sony's unpopular SonicStage software.