http://gallery.menalto.com/gallery/screenshots ? 
Accounts/Permissions
You start off with only one user, the Administrator (login name:admin). This account can do anything with Gallery. Typically you'll want to use the admin to create other users (which can also be administrators if you want). Users can be granted permission to create and maintain their own albums on a per-album basis (screenshot). Users can also self-register [0] (screenshot) and sign up for e-mail notification [0] (screenshot) when things in the Gallery change.
Albums
An album is a group of pictures and movies inside of a gallery. Albums can be nested inside of each other (screenshot) and can be customized on an individual basis. Albums can have specific permissions (screenshot) (ie, some users can modify it, some users can add to it, etc), and the album owner can grant permissions to different users. Albums can even be hidden to only allow logged in or specifc users access to even see that it exists.
An album's thumbnail defaults to a scaled version of the first image added but can be set to be all or part of any image in the album. Items in an album can be sorted based on date added, date captured, etc, and the whole album can be deleted, moved, or renamed. All captions for items in an album can be edited at once without having to click on each picture (screenshot). Comments can also be viewed in once place for easy review and moderation (screenshot). Additionally, if polling is enabled for an album, the results can be viewed by the album owner or optionally displayed at the top of the page.
Album can also be easily watermarked (watermarking every image in it) (screenshot) and customized by their owners in a variety of ways. You can change the title, colors, background, fonts, and borders. You can also specify a target thumbnail size and a target intermediate photo size (so that folks with lesser bandwidth can view scaled versions of big photos) (screenshot). The number of rows and columns in an album is customizable, as well as a variety of viewer options.
Photos
If you have the appropriate permissions, you can add photos to an album. A default method is set in the config wizard, but there are several ways to do this:
    * Upload a ZIP file full of photos and movies
    * Use a form to upload up to 10 photos at each time with and optional file containing descriptions. (screenshot)
    * Specify a web page and let Gallery go slurp up all the photos and movies on that page. (screenshot)
    * Copy all images to a directory on your webserver and let Gallery copy them directly into your album.
    * Use the embedded applet (screenshot) and drag-and-drop pictures and movies to upload them.
    * Use Gallery Remote or one of the Other methods available. 
As you upload pictures, they will be automatically thumbnailed, added to your album, and have intermediate sized images created if needed. They can also be automatically watermarked if you have enabled this feature[1]. Once photos are upload there are several things you can do to manage them:
    * Edit the title, caption, keywords, and other custom fields that you define. (screenshot)
    * Modify the thumbnail with java applet, selecting only part of the image to show. [2]
    * Rotate the image in increments of 90 degrees.
    * Move the photo to a different place in the same album or a different album.
    * Hide the photo so that only the album owner or logged in users can see it.
    * Delete the photo.
    * Add a watermark of your choice to your photo. (screenshot)