1393. Drag a window to an edge on my Mac?

One of my favorite features in Windows 7 and 8 is the ability to drag a window to an edge, and have the window snap to the edge, filling half or all of the screen. On the Mac, that feature doesn't exist. Is there some way to emulate that feature on the mac?

That's one of my favorite features to it I really missed it on the Mac. I kept trying to drag windows to the edge and they just didn't do anything. 

I did find application that emulates that feature and actually does a better job than Windows does. It's called Cinch and it's from the Irradiated Software. It is not free but it's pretty cheap and I find it really useful. Go to irradiatedsoftware.com/cinch/ and you'll find information about trying out this really useful utility that allows you to drag the window to the edge of the screen and have it fill the entire screen or dock to one of the edges of the screen.