Oh, ok! If it's not a replacement, what am I missing out on by just using this? It's been working ok for my needs so far but I'm not doing anything super fancy, and haven't tried any of the add-ons.
You shouldn't be missing out on anything in particular, though the most up-to-date version of any given tool will be on the individual tool page (e.g. Better Colorize). I try to make sure to update this page when there's a major change!