Plank is developed by Docky Team and written in Java
Plank is still in development, you can install with PPA as following:
sudo add-apt-repository ppa:ricotz/docky
sudo apt-get update
sudo apt-get install plank
You can check out some of its themes
1. Ubuntu Panel:
2. Glass Pill
3. Froyo
4. Rounded Class
5. HUD
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