Bulk Image Downloader - With Bulk Image Downloader you can download full sized images from almost any web gallery.
John's Background Switcher - Switch backgrounds to trending imgur, reddit, tumblr threads
Vov Picture Downloader - Download pictures from websites.
Wallpaper Cycler - NuonSoft WallpaperCycler is a powerfull utility to manage all your wallpapers and to automatically cycle between your wallpapers.
WFDownloader App - A free bulk image downloader application that also serves as a multi-purpose bulk downloader for your PC.
Walyk Wallpaper Changer - Walyk Wallpaper Changer allow you to change your wallpapers automatically or manually.