iPhoto Buddy is a Mac OS X application (Universal) that allows you to easily Create, manage, and switch between multiple iPhoto Libraries. The advantages of splitting your One Huge Photo Library into multiple, smaller ones include improved iPhoto performance, increased flexibility in organizing your digital photo collection, and a consistency with most other Mac applications that allow their respective data to be stored in as many documents (in this case, "Libraries") as you like.
iPhoto Buddy uses a simple, streamlined interface that was inspired by iPhoto itself. Anyone that has used iPhoto will immediately feel right at home using iPhoto Buddy. It truly is a companion application--a real buddy!
iPhoto Buddy will never alter/move/delete your Libraries or your photo files. It's perfectly safe!
What can you do with it?
With iPhoto Buddy, you can easily manage an entire list of iPhoto Libraries, enabling you to quickly and easily open the Library of your choice for viewing/editing/printing in iPhoto. You can easily switch between your multiple Libraries, and iPhoto Buddy will automatically Quit iPhoto and instantly re-launch it with the newly selected Library (iPhoto can only have one Library open at a time). There is no limit to the number of Libraries, and they can be located in various locations--even on external hard disk drives, network volumes, or encrypted disk images. Each Library can be assigned its own name that differs from its folder name in the Finder; each Library can be assigned a thumbnail image that can help to remind you of its Contents; and each Library can be password protected for privacy/security.
iPhoto Buddy also displays various details about your Libraries without launching iPhoto. Information like each Library's size and image count as well as a complete listing of the Albums, Smart Albums, Folders, Books, Slide Shows, etc. contained therein.