Best Free SEO Tool page on the internet

SEO Tools (Over100+)Best Free SEO Tool page on the internet! These free SEO Tools will help you to optimize website and move your search engine positionGoogle tool bar
New SEO Tools
Extremetracking New!!
Tracker you get every advanced feature required to picture the visitors of your website. Conveniently arranged, numbers, percentages, stats, totals and averages
Google vs Yahoo Graph
Graphic display of top 50 in Google & Yahoo linked.
Firefox with Google Toolbar
Improved web browsing Hits!
Keyword Density Analyzer
Enter URL, determines density of 1, 2, and 3 word phrases.
Multi DC PageRank Checker
Check PR values across all Google datacenters.
Retrieve SERPs
Google datacenter SERP checker.

Alexa Tools
Alexa Page Ranking
Cut & Paste or browse file for domain list - Displays Alexa Ranking. Good for checking large number of domains.
Alexa Rank Tool
3 month, 1 week, today Alexa Rank.
Alexa Ranking
Cut & Paste or browse file for domain list - Displays Alexa Ranking. Good for checking large number of domains.
Alexa Related Rank Check
Input up to ten domains - get 1 week, 3 month average & 3 month up/down Alexa Ranking.

Backlink Tools
Backlink Check Tool
Shows anchor text for your sites backlinks.

Code Validation
Atom & RSS Feed Validator
RSS feeds validator
W3C Markup Validation Service
Official W3C compliance validator

Combined Keyword Suggestion Tools
Adword Keyword Generator
Combine words script with stemming for PPC systems.
Combine Words
Combine words script for PPC systems.

Combo Search Engine Ranking Tools
Search Engine Placement Check
Enter URL/Keyword - Displays top 30 for 11 Search Engines.
Search Engine Position Checker
Enter URL/Keyword - Displays top 50 for 9 Search Engines.
Search Engine Positioning
Enter URL/Keyword - Displays top 100 for 5 Search Engines.
Search Engine Ranking Report
Input key phrase list & get Google & Yahoo Rankings.

Compare Search Engine Ranking Tools
Dogpile Search Comparison
Shows top results from 3 search engine.
Google vs Yahoo Graph
Graphic display of top 50 in Google & Yahoo linked.
Google-Yahoo-Ask Search
Combines search results from Google, Yahoo! & Ask Jeeves.
Myriad Search
Meta search engine that combines Google, Yahoo, MSN and Ask Jeeves.
Search Results Compared
Google, Yahoo, MSN results in one search
Thumbshots Ranking
Based off the Langreiter tool but lets you compare 6 different Search Engine Results with each other.
Yahoo vs Google
Langreiter - Graphic Compare of Google & Yahoo top 100 results.
Yahoo-Google Search
Shows top 100 Yahoo/Google results together.

Domain Tools
Bad Neighborhood Checker
Checks if you're linking to bad neighborhoods
Browser Screen Resolution Checker
Check what you Website looks like in different
C Class Backlink Analyzer Tool
Shows your links for differnet Class-C site.
Class C Checker
Class C IP range checker.
Class C Range Checker
Unique Class C IP Checker - Cut & Paste or load up a file.
DNS Report
Checks your domain and does email test.
Domain Age Tool
Determines the age of the domains entered.
Domain Dossier
IP to host, host to ip, traceroute, whois zone file. Hot Tool!
Domain Stats Tool
Enter domain and getdomain age, number of pages indexed, and number of backlinks.
Free Site Monitor
Server monitor and alert service
HTML Header Viewer
Shows HTTP headers the web server is sending.
HTTP / HTTPS Header Check
Allow you to inspect the HTTP headers that the webserver returns when requesting a URL.
IP Address Report
Bulk class C IP address checker.
Reciprocal Link Checker
Checks if the partners still link back
Redirects And HTTP Headers Checker
Checks for redirects on a domain
Sandbox Detection Tool
Checks to see if your site is effected by the Sandbox.
Search Engine Friendly Redirect Checker
Enter URL - Check your redirect to see if it is SE friendly
What Is My IP Address
Shows the IP of your computer or routers.

Exchange Link SEO Tools
Free Broken Link Checker
Tests all links site wide and reports any broken links.
Free Link Checker
Tests all links for entered URL page and reports any broken links.
One Way Link Verify
Track your one-way links - Shows status and PR.
Online Free Reciprocal Link Checker
Enter links - Reports back which ones are up, down or unreachable.
Site Link Analyzer
Lists internal and external links for input URL.

Google Ranking Tools
Advanced Google Search Methods
Enter domain/keyword and do different Google searches like site etc.
Free Google Keyword Ranking Tool
Search with list of keywords from differnet Google search sites.
Google Datacenter Watch Tool
Shows the differnet Ranking results for different datacenters.
Google One Line Results
Google displays each results as one-liners with anchor text the title.
Google Rank Position
Shows Google rank position, PR, number of entries indexed, DMOZ and Google Dir status.
Google Rankings
Enter URL/Keyword - Searches the first 1000 entries.
Retrieve SERPs
Google datacenter SERP checker.

Google Sitemap Tools
Online XML Sitemaps Generator
A free online Google XML Sitemaps Generator

Internet Bookmarking
Del.icio.us - Social Bookmarker
Social bookmarking
Your Personal Web File
Social bookmarking

Keyword Suggestion Tools
Free Keyword Search Tool
Displays keyword data using Wordtracker and Google search results.
Free Meta Keywords Tool
Reads meta keywords and hotlinks them to 3 keyword mining tools.
Google Adwords Keyword Tool
Keyword tool from Google that provides Specific and Similar keywords.
Google Keyword Suggestions
Queries Google for related relevant and popular terms.
Google Suggest
Google keyword completions when searching.
Keyword Generator
Keyword searches from Espotting Media's (UK) PPC database.
Keyword Popularity Tool
Search Overture & WordTrackers database - Mines these terms with dictionary, thesaurus etc.
Keyword Research Tool
Tool returns similar keywords found in the meta keywords of sites searched by your choice of 9 search engines.
Keyword Suggestion Tool
Keyword searches from Overture and Wordtracker (Wordtracker displays singular/plural & correct order).
Search Term Research
Searches Overture data for 16 countries and more.
Search Term Suggestion Tool
Shows keywords and frequency searched on Overture (Yahoo/MSN) last month.
Website Keyword Suggestions
Provides keyword suggestions along and keyword traffic estimates for the entered website.

Keyword Tools
GoogleDuel Original
Compares the popularity of two words - Good for checking Plural/Singlar.
Keyword Density
Enter URL - Generators keyword phrases from your webpage and displays density.
Keyword Density Analyzer
Enter URL - Displays 1, 2, and 3 word combinations.
Keyword Density Analyzer
Enter URL/Keywork - Displays density each different page component.
Keyword Density Analyzer
Enter URL, determines density of 1, 2, and 3 word phrases.
Keyword Density Tool
Enter URL - Generators keyword phrases from your webpage one, two & three words long & displays density.
Keyword Generator Tool
Cut & Paste text - Generators keyword phrases from your webpage one, two & three words long & displays frequency.
Keywrd Density Analyzer
Enter URL - Webpage stats PR/Links/W3C/etc.
Ontology Finder
Provides synonymous terms to keywords - Use these in your webpage text.

Link Popularity Tools (14)
Backlink Anchor Text Analyzer
Blacklink analyzer that shows URL and anchor text.
Check BL URL & IP & Find Age Tool
Shows unique domains linking to you
Free IBL Check
Input Keyword - Calculates Inbound Links Required for First Page SERP.
Link Appeal
Enter URL - Rates for link appeal.
Link Popularity & Site Analysis Tool
Shows links/pages for Google/Yahoo/MSN/Ask/Alexa
Link Popularity Analysis Tool
Analysis your backlinks in every which way.
Link Popularity Checker
Lists inbound links from 7 search engines & provides history.
Link Popularity Checker
Shows inbound links for Google, Yahoo, MSN, Altavista, Allintheweb & Hotbot.
Link Popularity Checker
Enter URL - Displays backlinks on 5 Search Engines.
Link Popularity Tool
Statistics regarding a site popularity
Link Quality Assessment
Shows IBLs, dir.yahoo, DMOZ, EDU, & GOV links.
Report Bot
Checks Links on 5 Search Engines, PR, Alexa Ranking, DMOZ.
Required Text Links Estimator
Input keyword - Shows inbound links for top 10 sites on Google, Yahoo & MSN.
Uptime Bot
Off-page (popularity) stats