Very nice list! I also happen to use the SEO tools at seochat.comI can recomend SEO Elite also, great analysis tool, The older version was better to me because it actualy calculated link values for you. I am not sure if Web position Gold is still out, but it was also good.
Free Keyword Suggestion Tool from Wordtracker is my recomended keyword tool that is free.
Iwebtool.com has a variety of free seo tools
webmasterworld.com also has some good tools.
goodkeywords.com is a good and free download for keywords
seochat.com is another good place for a few tools
But like Linda said, SEO software is something you will have to buy, and they can only be used for analysis.