I am wondering if there is a way to use Unity Dashboard in Gnome-classic? If yes, what are the dependency packages need to be installed?
UPDATE:
Or is there any app could do that?
Ubuntu – How to use Unity Dash in Gnome classic
gnome-classicunityunity-dash
Related Solutions
By issuing the command unity-2d-shell, you will launch the launcher.
Here is what you have to do, to automatically do this on startup:
Open
Startup Applications
Add Startup Program
For autohiding the launcher in 12.04 see this question: Autohide Unity Launcher in Gnome Classic.
Run sudo apt-get install lightdm. If it's already installed, run sudo dpkg-reconfigure lightdm, and choose lightdm. You can still log in to any desktop you've install by selecting the arrow in lightdm and clicking gnome classic.
Best Answer
There's Currently no way to use the Dash without Unity being active so here's an alternative.
elementary's Slingshot.
Slingshot launcher is developed by the Elementary team. Here is how to install Slingshot launcher in Ubuntu Natty from elementary team ppa.
Add the PPA
ppa:elementaryart/elementary-devand install slingshot-launcher from the software center.To use it you simply have to create a launcher in the Gnome Panel with the command
slingshot, the same goes for AWN.Source.