Nice free desktop clock – you can customize color and background and choose always on top or not.
Rainlendar Lite is a free feature rich calendar application that is easy to use and doesn’t take much space on your desktop. The application is platform independent so you can run it both on Windows and on Linux. The appearance can be customized with skins and you can even mix different skins together.
Kana WallChanger is a program that can be used to automatically change the desktop wallpaper. It accepts BMP, PNG, and JPG files, and can be setup to change the wallpaper within specified time.
IconTweaker- Customize your Windows desktop
Give your desktop a personal look by changing the default Windows icons. You can also modify individual icons of drives and folders to be able to recognize their contents easily.
Using the available themes you can apply set of icons at once. Designers can create themes to share their icons with other people. Many themes with beautiful icons are already included and ready to use.
Make a window roll into its title bar, send it to the back or make it stay on top. Minimize, maximize or close all visible windows, including minimizing to the tray area. Make a window translucent on Windows 2000 or above. WinRoll is lovingly hand-crafted in 100% pure assembly language to give the fastest response and the smallest memory footprint. WinRoll is proudly a FREEWARE and OPEN SOURCE application.