This plugin is used to add new gallery and image display functionality. Note that it does not work with the WordPress Media library – it is its own separate library.
Next Gen block: Basic image browser
Next Gen block: Basic Thumbnails
Next Gen block: Slideshow
Next Gen block: Tag Cloud
Featured image
This post’s featured image is actually a NextGen featured image, with an image pulled from a NextGen gallery (instead of the WP Media Library).