SizeUp allows you to quickly position a window to fill exactly half the screen (splitscreen), a quarter of the screen (quadrant), full screen, or centered via the menu bar or configurable system-wide shortcuts (hotkeys).

QuickTile is described as 'A lightweight utility for allowing you to quickly snap windows to a tiling grid under your existing Linux window manager. Can be triggered via keyboard shortcuts, the command line, or D-Bus calls' and is a Window Manager in the os & utilities category. There are more than 25 alternatives to QuickTile for a variety of platforms, including Mac, Windows, Linux, PortableApps.com and File Explorer apps. The best QuickTile alternative is BetterTouchTool. It's not free, so if you're looking for a free alternative, you could try AquaSnap or WindowGrid. Other great apps like QuickTile are Swish, Moom, Divvy and KWin.
SizeUp allows you to quickly position a window to fill exactly half the screen (splitscreen), a quarter of the screen (quadrant), full screen, or centered via the menu bar or configurable system-wide shortcuts (hotkeys).

Ever try to size a window so it just touches the edge of the screen? It’s tedious (at least for me). FreeSnap allows you to instantly resize any window edge to the corresponding screen edge. Want that window to touch the right edge of the screen?

Windownaut is versatile window management app that let's you define keyboard shortcuts and active areas on your screen to resize an position the windows on your desktop.
WinLayout is a program with keyboard hotkeys to move, resize, and snap windows all around the desktop area.

Easy Move+Resize is based on behavior found in many X11/Linux window managers, adding easy modifier key + mouse drag move and resize to OS X.

Arrange your application windows using nothing but drag and drop! There are no hot-keys to remember or menus to click, just drag and drop a window onto Layout Icon and it will instantly snap to that layout.



Give fresh new look to your phone with Fluid N.G, the navigation gestures app inspired by Breccia's concept.



WinNumpad Positioner is a lightweight and snappy Windows management tool that repositions Windows using simple Windows Key + Numpad combinations.




Define zones that autosize windows dropped on them.
Features:

Tuck is a handy menu bar application that allows you to quickly and simply clear multi-window clutter by hiding windows under your screen edges.




Arrange, resize, snap, and move windows in OS X with the help of keyboard shortcuts, certain window dragging gestures, or using OS X's window buttons.



