Very comprehensive list. A lot of these tools are just way too much information for me and my clients. I work with smaller, regional brands and much of the info that tools like radian6 provide is 1. out of price range and 2. too complicated and too far reaching. So, while I'm sure they are fabulous tools, most of these are not what I need to do my business. Hopefully some of my client will grow to the point that we can use sentiment analysis and hashtag tracking, etc, but when you've only got  a handful of mentions in a day, there's a lot of work to do first before it's worth spending time on setting up even the free systems. You have to choose what's worth the time and for me, it's Hootsuite, Google Alerts and ManageFlitter (or SocialBro). But there are some other things here I will check out.