Wallpaper Engine - Wallpaper Engine enables you to use live wallpapers on your Windows desktop.
Helium - Helium lets you accept payments by credit card for anything you want to sell online.
Video Paper - Set a video as your wallpaper.
PiPer - A DIY Minecraft computer to build gadgets
Plastuer - Plastuer is a Windows application for setting GIFs, videos, and web pages as your wallpaper.
Pennywise - Cross-platform application to open any website or media in a floating window