Windows 7 窗口管理新功能 Aero Snap 方便有用，Mac 下则可用

Cinch

实现相同功能。软件将屏幕左右和上方边缘变为热区，将窗口移动进去可相应让窗口填满左/右半屏，向上则为最大化。

Cinch 1.1.2 MacOSX | 3.7 Mb

Cinch gives you simple, mouse or trackpad-driven window management by defining the left, right, and top edges of your screen as 'hot zones'. Drag a window until the cursor enters one of these zones then drop the window to have it cinch into place. Cinching to the left or right edges of the screen will resize the window to fill exactly half the screen, allowing you to easily compare two windows side-by-side (splitscreen). Cinching to the top edge of the screen will resize the window to fill the entire screen (fullscreen). Dragging a window away from its cinched position will restore the window to its original size.

Requirements

: OS X 10.6.6 or later

More info

Cinch 1.1.2 MacOSX