Complete AnyAim online tools list
Wrap keyword lists with an [exact] or "phrase match",add "negative" signs etc.
Smart keywords density tool. Please note that it works correctly just with English now.
Search engines are pretty good about correcting misspellings on the fly, but mistyped keywords can still bring you traffic. You just have to know how and where to use them right :)
How search engine bot really sees a page.