SEO stands for search engine optimization.  It is the process of designing the web site in such a way that it would be able to attract search engine spiders and improve a site’s ranking. This article provides links to the best SEO Tools found on the Internet. It will help you to find out how to optimize your website, what you should use to improve the quality of backlinks, what keywords you should  use on your web-pages, and how to move up your position in search engines.

Free Webmaster Tools

Link Tools

Backlink Checker
Find out how many total backlinks there are for any one website. The…

Link Analyzer
Analyze incoming and outgoing links.

Link Extractor
Extract all links from the specified domain.

Link Popularity Checker
Check the number of links pointing to the website of your choice.

Link Suggestion Generator
Generate links that relate to the keyword/topic of your choosing.

Multiple Backlink Checker
View the number of backlinks found in search engines for multiple websites.

No-Follow Finder
Scan a website to find nofollow links to various other sites. The Nofollow…

Reciprocal Link Checker
Check multiple sites to see if they are really linking back to you.

Keyword Tools

Keyword Density Checker
The Keyword Density Checker tool extracts keywords from a website and…

Keyword Extractor
Extract keywords from any website and create a list of single, double, and…

Keyword Rich Domain Finder
Find domains containing specific keywords or phrases.

Keyword Suggestion Generator
Check keyword results and get suggestions.

Multiple Keyword Search Engine Position
Check a website’s search engine position for multiple keywords.

Multiple Website Search Engine Position
Check multiple websites’ search engine position with a single keyword.

Search Engine Position Checker
Check the position of a single site with a single keyword on various…

Authority Link Tools

.edu Backlink Checker
Check for backlinks from .edu domains pointing to any website using the…

.gov Backlink Checker
Check for backlinks from .edu domains pointing to any website using the…

Authority Link Checker
Find authority links from DMOZ, Yahoo! Directory, .edu and .gov sites.

DMOZ Backlink Checker
Find backlinks from DMOZ for any domain name.

Multiple .edu Backlink Checker
Find authority .edu backlinks for multiple domains.

Multiple .gov Backlink Checker
Find authority .gov backlinks for multiple websites.

Multiple Authority Link Checker
Find authority backlinks for multiple sites.

Multiple DMOZ Backlink Checker
Find backlinks from the DMOZ directory for multiple domains.

Yahoo Directory Backlink Checker
See how many backlinks a website has in Yahoo! Directory.

Search Engine Tools

Bing Indexed Pages Checker
Check the number of indexed pages in Bing for a single website.

Google Indexed Pages Checker
Check how many pages Google has indexed for one website.

MSN Live Indexed Pages Checker
Check all indexed pages in MSN Live Search for a single domain.

Robots.txt Checker
Check for and view the contents of the robots.txt file for any website.

Search Engine Listing Preview
Preview what your site’s listing will look like

Search Engine Saturation Checker
Check the number of pages search engines have listed from your website.

Site Spider Viewer
Find various SEO statistics and spider information about your site.

Spider Viewer
Discover how spider bots view your website.

Yahoo Indexed Pages Checker
Check how many pages Yahoo has indexed for one domain.

Website Rank Checkers

Alexa Traffic Rank Checker
Check the Alexa traffic rank for any single website. Alexa traffic rank…

Compete Ranking Checker
Check your current Compete rank for one website.

Compete Statistics Checker
Check Compete rank, uniques, and visitors for one website.

Fake Rank Checker
Use the Fake Rank Checker to find out if a Web site is faking their Google…

PageHeat Checker
Check the current PageHeat website rating for a single domain name.

PageRank Checker
Check the current PageRank of a single website.

Site Rank Checker
Check PageRank, PageHeat, and Alexa Rank for a site.

Multi-Site Rank Checkers

Alexa Multiple Rank Checker
Check the Alexa traffic rank for multiple sites. Alexa traffic rank…

Multi-Rank Checker (PageRank and Alexa)
Check multiple websites’ PageRank and Alexa rank.

Multiple Compete Rank Checker
Check Compete rank for multiple websites.

Multiple Compete Statistics Checker
Check Compete rank, unique visitors and traffic statistics for multiple…

Multiple Fake PageRank Checker
Check for fake PageRank on multiple domain names.

Multiple PageHeat Checker
Check the current PageHeat rating for multiple websites at once.

Multiple PageRank Checker
Check the current PageRank of multiple websites.

Header/Tag Tools

HTTP Header Extractor
Extract the HTTP Headers of a web page.

HTTP Header Viewer
View the headers of the site of your choice.

Meta Tag Extractor
Extract meta-tags information from a web page.

Meta-Tag Generator
Generate meta-tags for your site.

IP Tools

Multiple IP Address Checker
Get the IP address for multiple domain names.

Multiple Reverse IP Lookup
Get the hostname for multiple IP addresses.

Ping Domain/IP
Ping a domain or IP address to find the response time.

Reverse IP/Look-up
Look up the hostname for any IP address.

Miscellaneous Tools

Browser Details Tool
View your IP address and your browser details.

Convert Date to Timestamp
Convert a date/time string to a UNIX timestamp.

Convert UNIX Timestamp
Convert a UNIX timestamp to a date/time string.

Email to Image Converter
Convert an email address to an image to protect your privacy for use on…

JavaScript Clock
Display a working JavaScript clock on your site.

Send Anonymous Emails
Allows the sending of anonymous e-mails.

URL Shortener
Offer a URL shortening service.

Website Status Checker
Check whether the five major ports are responding.

Source Code Tools

CSS Validator
Validate your cascading stylesheets with the W3C CSS validator.

Domain Whois Retriever
Find out the WHOIS details for your domain.

HTML Encrypter
Encrypt your HTML code to hide it from visitors.

HTML Markup Validator
Validate your HTML/XHTML code against the W3C Markup Validator.

HTML Optimizer
Optimize your HTML code.

MD5 Encrypter
Encrypt text with MD5 encoding.

Source Code Viewer
View the source code of a website.

Webpage Size Checker
Check the size of any website’s source code in bytes, KB and MB.

Website Speed Test
Find out how fast your website loads.

Social Web Tools

Delicious Link Checker
Find out how many Delicious bookmarks there are for a single site.

Digg Links Checker
See how many links a site has on Digg.

Multiple Delicious Link Checker
Check multiple sites for links bookmarked in Delicious.

Multiple Digg Links Checker
Find Digg links for multiple websites.

Twitter Links Finder
Find links on Twitter to one website.

Ranking Tools

Google Ranking Tools

Advanced Google Search Methods – this is a tool is to search Google in many special ways. A useful resource for search engine optimization (especially keyword research) among other things.

Google Datacenter Watch Tool is a tool that lets you do a search on Google at all the different datacentres.  Note, that at this time there are 700+ known Datacenters.

Google Rank Position shows Google rank position, PR, number of entries indexed, DMOZ and Google Dir status.

Google Rankings check the ranking of a web page in Google.

Yahoo Ranking Tools

Yahoo Search Rankings is a free online SEO tool to check the position of your website in the search engine of Yahoo.

Alexa Tools

Alexa Page Ranking allows you to cut and paste a number of domains. Get the 3 month Alexa Ranking. If you want to check Alexa Ranking for a number of sites, you can browse your harddrive and provide a list of domains.

Alexa Rank Check is a tool that let you check the Alexa Rank and Google PageRank for up to 10 websites in one go – perfectly for site comparisons. Please note that the best possible Alexa Rank is 1 and the best possible Google Pagerank is 10

Alexa Ranking Find out how your web site traffic stacks up against all your competitors! This is one of the most accurate freely available tools to find out how well your site ranks up against millions of other sites on the Web.

Alexa Related Rank Check tool to check several Alexa ratings at once.  This could be useful when checking out your competition.

Page Rank Tools

Datacenter Quick Check checks all Google datacenters for BackLinks, PR and Ranking of keyword.

Future PageRank Tool will query Google’s various data centers to check for any changes in PageRank values for a given URL. Usually all data centers will output the same, but if queried during an update, you might get a glimpse of any upcoming changes in your chosen URL’s PageRank value.

Page Rank Tool will query and return the Google PageRank values for submitted URL from various Google datacenters. Usually all returned values are the same, but when there’s an update going on, you will be able to watch out your Page Ranks closely.

Compare Search Engine Ranking Tools

Dogpile Search Comparison gives you the top results from Google, Yahoo! and MSN.

Google vs Yahoo Graph looks at the results from Yahoo and Google, finds the similarities and then gives you a graphical display of what results are in both search engines. This illustrates that optimizing your site for both engines is not a very easy thing to do, but not impossible.

Google-Yahoo-Ask Search search engines differ more than you think. Compare Google, Yahoo, and MSN with one search.

Myriad Search is a search engine that combines Google, Yahoo!, MSN, and Ask Jeeves in one screen. You can modify the individual influence of each search engine in the results.

Thumbshots Ranking is a fun way to learn about search engines and optimizing a site’s ranking.

Yahoo vs Google compares top 100 search results from Google and Yahoo!

Combo Search Engine Ranking Tools

Search Engine Placement Check is a verification tool that checks if your site is in the top three pages of a search engine result for a specific keyword. It’s important to be in the top 3 pages of a search result because most people using search engines don’t go past the 3rd page.

Search Engine Positioning check your Search engine positioning (SERPS) on Yahoo, Google, All The Web. MSN and Hotbot. Just enter your keyword/keyword phrase into the “Keyword” submit box, then enter your URL into the field labeled “Your URL” and specify the “Page Depth” this variable tells the spider how far to go page wise before giving up trying to find your rank. If you are not in the serps within “X” specified pages then the message “There is no information for your query” will come up. It doesn’t really mean there is no information for your serps, it just means that you don’t rank for that keyword within your specified page depth.

Search Engine Ranking Report Enter your own keywords (one phrase per line) and domain to find out where your domain ranks for a set of keyword searches.

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