Google Chrome has the same feature since version 8 if I’m not wrong. you can see a thumbnail of your current tab and easily move to one with a smooth animation. But this feature is hidden and you need to turn a flag to enable it.
To do that, write about:flags in your address bar.
Then find and enable the Tab overview experiment.
Scroll down and click Relaunch Now.
That’s it ! Now use 3 fingers on your trackpad to use it !

