I am using CatsCradle for website translations. Unfortunately, it has no automatic function to download the whole website. You have to have the files on your hard disc before you can work with CC.

I use DéjàVu X to translate HTML documents. Once I have imported all the pages of a site into my DVX, I can easily do a full word count of all the pages in the project. The whole process takes less than a minute or so.