As mentioned by Google,
"Picasa is software that helps you instantly find, edit and share all the pictures on your computer. Every time you open Picasa, it automatically locates all your pictures (even ones you forgot you had) and sorts them into visual albums organized by date with folder names you will recognize. You can drag and drop to arrange your albums and make labels to create new groups. Picasa makes sure your pictures are always organized."
The newest version of Picasa is in a testing repository. Although there is no 64-bit version, the 32-bit version of Picasa 3 will work with the proper libraries installed. To set it up, open the /etc/yum.repos.d/google.repo file and add the following:
name=Google Testing - i386