Few months ago, we have seen one of the best free flash galleries – dfGallery. There are a lot of great features. It allows integration of most popular photo sharing sites like Flickr , Picasa , Photo Bucket and Fotki along with background music.
Now, dfGallery 2.0 has just released. The reason for this gallery to be cool is not just its UI but the way it is built and architected. They have an amazing theme engine built to support custom themes with multiple skins for each. The administration console built on CodeIginter lets you manage multiple galleries and albums of different types.
This is just the alpha release and they expect lots of feedback to get this to its best possible.
License: Apache License 2.0