Originally Posted by
cano
Google Picassa is a photo organizing software, not photo viewer or photo editor even if you can do that too of course.
If you just want to browse a folder of pictures you made or edit something on one picture Google Picassa is not for you.
Picnic included in Picassa is an online editor, it's running in web browser container within Picassa.
I'm using XnView for viewing pictures, it can also batch process pictures (convert, resize, brightness...) and Gimp for editing. Both are free.
If you are looking for something better. I can recommend ACDSee (older version 5 or 3) and Photoshop CS5