If you've migrated from Windows/Ubuntu to Mac OSX, then you might miss the feature of re-sizing the windows (with keyboard) and aligning them properly on top/left/right/bottom/center of the screen. Though we can use the + and - on toolbar to resize, we won't get the expected behavior always :( Recently I came to know about an app, called Spectacle, which comes handy to resize and position the windows with ease. To know more about it and to get it, click here .