I'm going to share with al of you huge collection of Seo Tools that can really help you all doing optimization of web sites.

With help of these Tools you can cut down your manual working hours on making reports related to stuffs like: keyword analysis, Competitors analysis, Domains Analysis and so on...

Basic Domain Analysis:-

1. http://www.who.is/
This will offer you: TLD Availability, Domain Name: , Status: , Registrar:, Whois Server:, Referral URL:, Expiration Date: , Creation Date: , Last Update Date:, Name Servers: , IP Address: , IP Location:, Website Status:, Server Type: , Alexa Trend/Rank:, Page Views per Visit: , Cache Date: , Registrant: , Contact info of Domain

2. Server Information:
http://www.kenkai.com/seo-tools-server-info.php

3. Domain Way Back Check tool: This tool will give you detailed view of sites way back history. From day of creation to till date how your/any site has gone through different phases.
http://web.archive.org/collections/web.html

1. Keyword Suggestion Tools:

freekeywords.wordtracker.com
digitalpoint.com/suggestion/
trends.google.com
https://adwords.google.com/select/KeywordToolExternal
http://www.google.com/experimental/
keyworddiscovery.com
http://keywords.submitexpress.com/
goodkeywords.com
http://labs.google.com/sets
inventory.overture.com

2. Keyword Density Analysis:
http://www.seocentro.com/tools/search-engines/keyword-density.html

To check out how you competitors are performing on major search engines go for this:
http://www.urltrends.com/comparetrend.php

To check Page rank or trust rank go for these:
http://www.prcheckingtool.com/
http://www.trustrank.org/

Reciprocal Link Checking Tool:
http://tools.seobook.com/general/link-check/

Back Link check tool:Offer you all the back link along with Anchor Text, PR and Outbound links on that page.
http://www.backlinkwatch.com/

Meta Tags Analysis:
http://www.seocentro.com/tools/search-engines/metatag-analyzer.html

In order to check your PR, Indexed Pages, Back Links and so on ...ON different Google Data Centers check out these:
http://oyoy.eu/google/pr/
http://oyoy.eu/google/cache/
http://oyoy.eu/google/links/
http://oyoy.eu/google/pages/

Check SERPs on GOOGLE:
This is very important Tool that will let you know about your web site performance on GOOGLE i.e for which keyword you are doing TOP on GOOGLE.
http://www.seodigger.com/

1. XML sitemaps: Maximum 500 pages will be indexed in sitemap. Both HTML and XML Sitemaps & Text Sitemaps as well.
http://www.xml-sitemaps.com/

2. A1 Sitemap Generator: Unlimited Pages. Both HTML and XML Sitemaps
http://www.micro-sys.dk/products/sitemap-generator/

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Thanks
SEO & Internet Marketing Specialist