I especially like the blog ranking tools — very nice.
clipped from www.techipedia.com

  • SEO for Firefox: An excellent Firefox addon that provides users market data from Google and Yahoo search results, including PR, age of domain, links from external pages (and types), type of domain, Technorati data, Alexa ranking, DMOZ listing, number of cached pages, Bloglines subscriptions, Yahoo directory listing, and whois information.
  • Top Ten Analysis SEO Tool: Released by Jim Boykin and company last week, this tool allows you to see a number of stats based on a domain name and a search phrase, including top 10 sites for that phrase on Google/Yahoo/MSN, number of pages in the index, backlinks, .edu/.gov site links, Alexa ranking, Google’s allinanchor rank, whois age of URL, Wayback machine age, and how often the keywords were used on this page.
  • BlogJuice calculator is fairly new. It’s a great little tool that enables you to see how your blog is doing compared to others in your niche, or in general.
  • Bloglebrity Tool Rank right up there with Britney Spears and Paris Hilton.
  • “How much is my blog worth?” Tool Want to sell your blog? Find out how to price it here.