Custom tag-based architecture. 
Tagging allows a single image to be individualized across several galleries, by using multiple image tags, with each slice containing unique data.
HTML drag & drop uploading. 
Uploading new images to RokGallery is simple with its HTML5/Flash drag and drop uploader, with a conventional file browser alternative.
Modify using the Slice Editor. 
The advanced Slice Editor is loaded with native application functionality such as non-destructive selective cropping and resizing.
Reflex is an elegant, professional and highly flexible template. It is the first to debut RokGallery, an advanced new multiple tagging gallery solution for Joomla, with integrated styling and accompanying documentation, instructing you on using its simple, but powerful feature set.