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!
www.iphotobuddy.com, download iPhoto_Buddy_131.dmg.zip