Best way to organize a large photo library on a 10.6.8 Macbook?
I have an older Macbook pro- version 10.6.8.
I am looking for the best way to organize my large library of photos (approx. 15,000). I have both personal as well as professional photos that I would like to organize and keep separately. I currently use iPhoto'09 version 8.1.2 but it has become very slow and I would like to find a solution that uses better organization. I am considering keeping my personal photos in iPhoto and my professional photos in another organization app. I was thinking about purchasing Aperture, however it is only available for Mac OS X version 10.7.5 or later and the same goes for the latest version of iPhoto.
I am a little confused about what my options are. Can anyone recommend anything? I am looking simply for a good organization tool, I am not interested in photo editing or anything beyond that.
MacBook Pro, Mac OS X (10.6.8)