Wallpaper Engine - Wallpaper Engine enables you to use live wallpapers on your Windows desktop.
7+ Taskbar Tweaker - 7+ Taskbar Tweaker allows you to configure various aspects of the Windows taskbar.
Lively Wallpaper - What is it? Lively is a Free and Open-Source Software (FOSS) for animated desktop wallpapers.
TaskbarX - TaskbarX gives you control over the position of your taskbar icons.
ScreenPlay - Open-source and cross-platform Wallpaper, Widgets and AppDrawer app.
TranslucentTB - TranslucentTB make Windows Taskbar transparent