Noise Ninja, Nix multimedia.
Noise Ninja is built into the latest Bibble, so buying Bibble would be the route to go there.
Nix Multimedia is the people who wrote the new version of Capture NX coming out next month. If you buy Nix, I don't know if there will be an upgrade price on the new Capture NX, but I know there is an upgrade price on Capture 4 to Capture NX.

I own Bibble and Capture. Capture has better colors, Bibble is faster and will WB jpgs.