PhotoShow – Web Gallery

PhotoShow is a free, open-source, and very easy to use web gallery installable on any web server.

Adding and sorting photos, albums, users, and groups have never been easier. Simply drag and drop them wherever you want.
To delete a photo or an album, just drag and drop it on the bin. Easy !      

PhotoShow automatically generates the whole website, including the thumbnails. Also, if your photos are bigger than 800x600px, it generates a smaller version for displaying (the big version is still available for your viewers to download, of course).