Another dock in mac?

I don’t believe you can. If you’re just looking for a place to store more applications, just throw some aliases of programs you use often into a folder and add it as a stack.

No, you can’t. you can reposition it, and change it’s appearance, in some cases, with the assistance of extra programs.

you can create Stacks (in OS X 10.5.x), which add to the Dock to various folders, including the Applications folder.

but a completely second dock – not to my knowledge.

Dock Spaces will do this. You can use a keystroke to switch or use the menubar.

I found it completely worthless. But you might like it.

Wow. Great, Thanks. The dock space is really cool.