Window management at its simplest

Cinch allows you to precisely resize a window simply by dragging to the left, right, or top screen edge.

Cinch requires Mac OS X 10.5+ (Leopard, Snow Leopard, Lion)

Cinch gives you simple, mouse-driven window management by defining the left, right, and top edges of your screen as 'hot zones'. Drag a window until the mouse 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.

If you prefer a keyboard-centric approach to window management, you might also take a look at SizeUp. Use Cinch together with SizeUp to cover both your mouse and keyboard workflow.

Tips

• Drag windows by the title bar for best results.
• Cinch works best with single monitor systems as the edge between monitors is difficult to cinch to, but it can be done. Here is a trick to make it easier.
  In System Preferences > Displays > Arrangement tab, you can skew your displays by a little bit, giving a "lip" to easily cinch to.
  
• If you have Spaces enabled, holding a window on the edge of the screen for too long will activate a Space change which may interfere with using Cinch. You will quickly get used to the timing, but you can also change the delay with this handy trick.
  To change the delay before windows move between Spaces, you can either download the free application Warp, or if you're more adventurous, you can follow these steps to do it manually:

  1. Open Terminal.app located in your /Applications/Utilities directory
  2. In Terminal, type the following command all on one line, where 2.0 represents the new delay in seconds that you can customize. The default delay is roughly 0.75 seconds: defaults write com.apple.dock workspaces-edge-delay -float 2.0; killall Dock (Warning: Any windows minimized in the Dock will de-minimize when you run this command)
  3. Press return

  To change back to the default delay, follow these steps:

  1. Open Terminal.app located in your /Applications/Utilities directory
  2. In Terminal, type the following command all on one line: defaults delete com.apple.dock workspaces-edge-delay; killall Dock (Warning: This command is more risky than the command to increase the delay, please make sure you have the exact command before continuing. Also, any windows minimized in the Dock will de-minimize when you run this command)
  3. Press return