I have used Wordze. It's okay but there's a lot of EU-centric info so if you're targeting the US market, you'll have to scrub the keywords a little bit before being able to use them. The traffic info is on point though and very useful for PPC campaigns.
Internet business promoter uses google keyword tool but then applies the kei to the words you download from google. It cna analyses your competitors and collect links for you. Thanks Andy