Coppermine is a very comprehensive online slide show, allowing you to classify and distribute your images. Coppermine insists on the community effect of your slideshow, it allows visitors to vote for their favourite pictures, to leave comments, but also to filter photos by name, popularity, best ratings, favourites ...

Even better, Coppermine fits into CMS modules or forums such as phpBB. So your visitors can juggle between slide shows and forums.