Corel bills its WordPerfect Office software as ‘the world’s leading alternative to Microsoft Office’. But when it comes to US retail sales, Corel lost the no. 2 spot in 2005 to a somewhat unlikely competitor: Apple Computer’s iWork. According to market researcher NPD, Apple grabbed a 2.7 percent unit share, while Corel had a 1.6 percent share. Microsoft maintained its dominance with nearly 95 percent of unit sales.