If you regularly work with multiple apps, you should check out SizeUp for Mac. This utility gives you complete control over your windows via keyboard shortcuts, and 9to5Toys Specials has it now for $5.
The app has a range of preset sizes and positions for windows — you can quickly assign one half of the screen to your primary workspace, and give other windows a quarter each, for instance. Equally, you can divide your desktop into thirds, and “stick” windows to a preset position by dragging them to the edge of the screen. SizeUp provides support for Spaces and extra monitors, and all of these presets can be triggered with fully customizable shortcuts. The SnapBack feature lets you put windows back to their previous state, while the spacing and positioning of the presets can be adjusted under settings.
Order SizeUp for Mac now to save 61% on the regular price.