Chrome Add-On: Open a webpage in a pop up window.

Although tabs are the most convenient way to deal with multiple webpages, sometimes we need to be able to view more than one website at the same time. For instance, there can be a scenario where one needs to compare and analyze two sets of data from different websites. Likewise, having a multiple web pages opened side by side on the same monitor helps increase your productivity, especially if you have a high resolution screen. While you can always use multiple browser windows for the purpose, how about making things even more convenient? If you want to snap a website over another, this handy Chrome extension called Picture In Picture Viewer can prove extremely useful. It lets you view multiple websites together by placing one of them in a popup window above the other. More details here.