Works and has keyboard shortcuts. You can customise the window layout and make a list of websites to automatically split screen from (google search is listed by default). I like that you can use ctrl + click. NiftySplit doesn't let me do that.

However, when you close the second window, the main window doesn't maximise automatically. So here NiftySplit wins.

Also note that the keyboard shortcut can't be rebound (not a problem for me, might be for some)