Tile Windows Verticall/Horizontally?

There is no option to do this in Mac OS X. The nearest thing might be Expose, but I know that's not what you're looking for. Maybe someone else knows of a third party app that does it.

 

Are there any window management programs available for OSX in the first place? I'd like something akin to Sizer on Windows. It lets you resize windows to a certain pixel size preset. Very handy due to Windows' idiotic "hey let's have this in 640x480 on a 1920x1200 screen" behavior.

 

Well, after following a couple of forums, and landing here, I discovered IrradiatedSoftware's SizeUp. It's EXACTLY what I wanted:

• Allows me to tile windows in quadrants
• Can also use all top half, bottom, half, left half or right half of the screen
• Works perfectly with multiple displays!!
• Can also snap back, center windows, and works/understands Spaces
  

You can download it as a demo, which displays a little window asking for registration every now and then. This is really cool and useful software, the price is incredibly reasonable, and if you don't agree, the developer even allows you to name your price! (within reason). Honestly, when I tried it a couple of times, I inmediately signed up for $20.

Marcos
(very happy user)