Browse open tabs in Google’s Chrome browser (Like Showcase in Firefox)

Here’s a description & screenshots

http://www.howtogeek.com/howto/12026/visually-browse-through-your-open-tabs-in-google-chrome/

and here’s the plugin link:

https://chrome.google.com/extensions/detail/gmpnbibondcjmkmmdmdjahgoglpendge