Superpaper is an advanced multi monitor wallpaper manager for Linux and Windows operating systems, with partial and untested support for Mac OS X.

Features:

• Set a single image across all displays
• Set different image on every display
• Span images on groups of displays: one image on laptop screen and another spanned on two external monitors, for example.
• Pixel density correction: span an image flawlessly across displays of different shapes and sizes!
• Bezel correction: let the image continuously span behind your bezels.
• Perspective correction: span the image even more flawlessly!
• Manual pixel offsets for fine-tuning
• Slideshow with configurable file order from local sources
• Add wallpapers one by one or a folder at a time (no subfolders)
• Command-line interface
• Tray applet for slideshow control
• Hotkey support for easy slideshow control (Only Linux and Windows)
• Align test tool to help fine tune your settings (Accessible only from GUI)