I was always a big fan of the shift-it and size-up window managers for the mac, but they were never quite flexible enough.

Enter Slicer. It’s seriously awesome. You should buy it now because it’s only $3.99 and it’s better than competition costing $15.

Here is a screenshot of my desktop organized by slicer, notice the top two windows are 1/3 and 2/3 width. Awesome:

BUY IT NOW (or use the free trial if you’re not convinced)