Sid - Blogging for Newbie Webmasters’

IndexRank

“What does IndexRank measure?
IndexRank measures the rate at which your site is being indexed, which also translates into the rate at which it is growing. If you have a stagnant site with little content being added, you will have a low IndexRank. If you constantly increase content, you will have a high IndexRank. Read More!”

Website Health Check

To get information on Missing/Duplicate Title tags, Descriptions , www vs non-www, Multiple Index Pages!

Keyword Density

The keyword density tool is useful for helping webmasters and SEOs achieve their optimum keyword density for a set of key terms.

Keyword Suggestion Tool

This is a Free Keyword Research Tool to indicate monthly search volumes along with other related keywords in respect of a particular keyphrase.

Dead/Broken link Check tool

This is extremely important to get rid of dead/broken links from your site; check if they are there to take prompt action!

Outbound links Check Tool

This tool shows every outgoing link from the given domain. Separated in external and internal links.

Complete Site Analysis

This tool generates a complete site analysis e.g. amount of backlinks, indexed sites, Google PageRank and also if your domain is listed in DMOZ and Yahoo directory.

Most of you are well conversant how important back links are to maintain Google PR of a site.

This is the free tool to check the back-links to a web page.

IwebTools Backlink Checker!

And this is a sample of the result you get when you check back-links for Google.com

And here is another free tool to generate HTML and XML sitemap for your website.

Create your Google Sitemap

Here is a screen shot of the interface to generate the sitemap.

SEO Tools | Google Sitemap | Back-link Checker

Free Keyword Research

Checks for search volume in  different major search engines, suggests alternative keywords, its a good stuff altogether.
url: tools.seobook.com/general/keyword/ 

Here is the link :

http://www.seo2020.com/seo-tools/keyword-research/keyword-research-tool/

It is amazing.

1.  McDar.net

Use: Comes in handy to check the ranking of your website 

Input: Your website url  and the keywords.

Output : Shows the rank(position) of that url across various datacenters.

Customisation: You can set options to pick a particular datacenter also you can check Backlink/ PR Update

Reviews: Bit slow but useful.
2. Digital Point.com

Use: The FREE tool can be used to check for a site’s ranking in different search engines and track this ranking historically 

You require to sign-up with that site to use this tool.