NuKit by Nulana (12 €, $15 I guess, on discount)
The feature set of this newcomer includes a mouse-driven window mover and resizer. I use Ctrl-Alt-Mouse movement for moving windows, Ctrl-Alt-Cmd-Mouse movement for resize. Fast on my MacBook 2,1.
Download the trial from their site, rather than buying blindly from the App Store - well, that's common sense for any app.
The other main modules are a quite simple launcher and a shortcut manager, which are also sold separately. Nulana promises to refine them soon. Nice: the launcher offers dictionary entries (copy function promised) and an automatic calculator with fractions.