CoreDownload Free Wallpaper Changer is a free wallpaper changer and sequencer that will allow you to customize your desktop with a few clicks. You can make a play list with your favorite pictures and play it all day long.
4dots Free PDF Metadata Editor allows to batch edit pdf properties such as author, title, subject and keywords. The application is very easy to use. It is integrated into Windows Explorer and can be used with a right click or with drag and drop.
PDF Info contains many special features like removing all XMP metadata and Info data, exporting Info data to XML and importing both XML or/and XMP metadata in to a single or a batch list of PDF files.