Two years before its 2003 launch (as the iTunes Music Store), Apple introduced the iTunes client as a desktop music management program and implemented it as the device manager for the first iPod later in 2001.

ENGADGET

If you've ever used a traditional desktop bookmaking software program, including MyPublisher's, you'll recall the dizzying number of intricate adjustments that can be made to any photo, layout, design or background pattern.

WSJ: Review of KeepShot: Hassle-Free Photo Books in One Couch Sitting

The new iWork desktop application now includes a spreadsheet program, dubbed Numbers, offering an Apple alternative to Microsoft's Excel.

FORBES: Magazine Article

The Gracenote Developer program supports a variety of development platforms, including mobile, desktop and Web APIs.

ENGADGET: Gracenote unleashes its vast musical know-how to developers