After a public beta test period, Helium Foot Software has released MercuryMover 2.0, a utility that enables you to resize and move windows using only the keyboard. A free upgrade for 1.x users, MercuryMover costs $20 to register.
MercuryMover 2.0 adds "shortcuts," which let you assign a single key to a favorite window size and position. MercuryMover also includes a heads-up display which shows you the current window's width, height and distance from the top left corner of the screen. The interface has been updated as well.
System requirements call for Mac OS X 10.5 or later and 2.9MB hard disk space.