iPhoto is an excellent tool for basic photo management and editing, but if your library's getting too big to handle or you need advanced editing options, it might be time to look into alternatives. Adobe's Lightroom and Apple's Aperture provide better management and image tools, while Photoshop and Photoshop Elements can augment iPhoto's basic editing software with more powerful options. If you're starting to feel like your library is getting out of control, here are some of the best reasons to upgrade.