Without being Canon-specific, there are a handful of tools I use and recommend. Most are cheaper than the standard Adobe products (Lightroom, photoshop) and have free demos:
SilkyPixBibbleACDSee ProI also use Corel's PaintShop Pro for editing. They're up to version 12 or something, but I still use 9.
I shoot 14-bit RAW on a Nikon D700.