Identify FREE and PAID online tools to assess and track a website\'s performance

I need a freelancer to research different online tools (free or paid), and identify online automated tools that can help me understand the following items for different websites. The reason I want to do this is because I want to track and compare my competitors. 1. Track different websites (my competitors websites) to determine what content they are posting on their site, and what content they are removing from their sites. 2. Traffic and unique users per day to the website - and also how many sales? 3. How often they are mentioned in social media, i.e Twitter and Facebook 4. How many more Twitter followers they have received in the last week 5. Who they are now following on Twitter. 6. What keywords that site is bidding in and using in their SEO 7. The websites conversion rate. 8. Number of websites linking in 9. And anything else that is important to track on websites and tracking their performance!! Thanks, Peter Jackson