iPhoto Library Manager allows you to organize your photos among multiple iPhoto libraries, rather than having to store all of your photos in one giant library. You can browse the photos in all your libraries directly from iPhoto Library Manager and search across all your libraries to help track down a particular photo.
iPLM also gives you the ability to copy your photos from one library to another, while keeping track of photo metadata that is normally lost when exporting from one library and importing into another. You can split up a large library into multiple smaller libraries, merge entire libraries together into a big one, or rebuild a corrupt library that is causing iPhoto to hang or crash. It can also analyze your libraries for duplicate photos, showing them to you side by side and letting you get rid of extra copies of photos that you no longer need.
What's new in this version:
- When bringing up the QuickLook window to browse photos on Yosemite, navigating using the arrow keys now works again
- Keep the duplicate browser from gradually scrolling up while adjusting the photo size
- Added documentation on how to update iPhoto on OS X 10.10.3
- Fixed a hang that could occur on startup if a large number of libraries were inaccessible, e.g. on an unconnected external drive