Broken Link Checker
Put your website or weblog home page URL in the input box and a little spider will read the html code and check
for the broken links. The spider splits links in two categories—internal, from the same host, and external, outgoing
link to different domains. Once you have put in your start URL the bot will visit your website and follow all links
checking for their status. When it's finished you will see a report showing all the bad links found, not only those with 404 status.

Domain Stats Tool
This tool helps you get all kind of statistics of your competitors' domains and show you how you rank in comparison to them. The statistics include Alexa Taffic Rank, Age of the domains, Yahoo WebRank, Dmoz listings, count of back links and number of pages indexed in Search Engines like Google, Yahoo, MSN etc.

Link Popularity Checker
Offers instant, online reports of a webpage's link popularity rating
in three top search engines; Google, Yahoo! and MSN - FREE! Link
Popularity refers to the number of hyperlinks pointing to a web page.
The higher a web page's link popularity rating the better, as most major search engines consider link popularity as an important factor in determining a web page's relevancy in its search rankings.

Screen Size Tester
Check out your site in different screen sizes. Test your web pages
in different window dimensions (screen resolutions).

Search Engine View
Take a look at how your site looks to the search engines. Some search engines use Meta Tags to catalog your site. Some search engines use
the Meta Tags to display the listing of your site. Here's your chance to
see how your site looks to the search engines. If you want search engines to be steered away from your site
you can do so by following the guidelines on the side panel.