The San Francisco Chronicle notes that Apple’s software business is growing steadily. “Apple, which has generated plenty of buzz with its sleek-looking Macs and iPod music players, is quietly building momentum in another category of personal computing: software. Last fiscal year, the Cupertino firm’s software sales came in at US$503 million, a 39 percent improvement from the previous year. Beyond Apple’s hugely successful iPod and online music store, software–which includes its iLife set of multimedia programs, tools for professional musicians and filmmakers and the Mac operating system–has become the fastest-growing part of its business.”