I'm a fan of SizeUp. http://irradiatedsoftware.com/sizeup/

SizeUp is great if you have multiple monitors too, you can send a window from one screen to another in one keystroke.

except Adobe Air apps (stupid hipchat)

SizeUp is awesome. Easy window management without having to touch the mouse? Yes please!

Don't forget ShiftIt.

Completely Free and does everything divvy and SizeUp can do !!

A git repo, with latest chages based on

  https://github.com/fikovnik/ShiftIt/network

appears to be here:

  https://github.com/mehowte/ShiftIt

Very easy to build with Xcode 4 on SL 10.6.8 ...

I'll be happy to upload a binary of the latest build I made last night for those in need (just ask).

As far as I can remember I had problems when I compiled it to a universal binary so if anyone else does try compiling it directly to your architecture.

I use Moom. It's inexpensive and you just hover your mouse above the maximize icon.

http://manytricks.com/moom/

I just purchased this. One feature I'm really looking for is the ability to launch multiple apps in a specific configuration. The best solution I've found so far is using Applescript. I realize I might just be overlooking already implemented features. Anyone have a recommendation?

Yup, the fifteen bucks I spent on Divvy were definitely worth it.