Picasa from Google is the best free Windows application for organizing and editing your photos. It is extremely well organized, syncs with Picasa online albums, and you can install a Facebook upload plug-in. Check it out:Mac OS X
Apple's iPhoto is by far the most intuitive and powerful free photo editing and organizing application for you Mac. Included with every new Mac as part of iLife 08, this is something you should definitely start using today. There are tons of plug-ins available for uploading to Facebook, Flickr, and Picasa online albums.
Web
Flickr combines online photo storage, editing, and sharing with social networking. Share with friends, comment on photos, and enjoy no storage limit; there's simply a monthly upload limit of 100mb. It's the best way to store and share your photos online.
For a completely unique experience, with one of the most enjoyable web apps out there, you have to check out Picnik. It's bubbly, fun interface let's you edit photos stored on your computer, Facebook, MySpace, Photobucket, Flickr, Picasa, and more. You can crop, add color effects, text and clip art, and touch-up the photo in every way imaginable. Also make sure to read PC Magazine's recent article comparing these programs and more in detail.
