Here is an interesting Chrome extension, one that lets you open links using Firefox. A useful one for those who use Chrome and Firefox simultaneously.
The extension adds a (you guessed it correct!) Firefox icon to your Chrome toolbar. When you are on any web page, click this icon to open the same page using Firefox.
Simple. A simple but clever idea, kudos to developers!
Oh, if you were wondering, there is a Open in Chrome addon available for Firefox too, to open URLs using Chrome, while browsing on Firefox.
You can install the Chrome extension from here.