Online SEO Tools – the Ultimate Collection

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Ann Smarty
Ann Smarty
Online SEO Tools – the Ultimate Collection

All tools listed below fall under the following criteria:

  1. they are all useful for SEOs;
  2. they are all web-based (no desk-top ones or FireFox extensions so far);
  3. they are all free.

If you know of any online SEO tools that were not mentioned here, please comment and I will update the post. I will do my best to continuously update the article to delete the tools that are no more available and add new ones.

Table of Contents:

1. Backlink Analyzing Online SEO Tools

Backlink Checkers

Options/ToolsSmartbacklinksAnalyzeBack Links

(currently not working)

LinkDiagnosisLink Hounds Yahoo Backlink Info
Checks links toPagePageDomainDomain, page, all deep links
Best featureFast and smoothKeyword-in-anchor-text searchMultiple sorting and filtering optionsData organization based on the linking domain
Anchor Text+++
Linking page outbound linksInaccurate+
Nofollow highlight++
Firefox Extension++
Sorting options+
Set Preferences++
Useful linkswhois data; site web archive; Google cache; linking pages.

More backlink checkers:

  • Backlink Watch (checks Anchor text);
  • Domain Backlinks Checker (sorts the results based on the first- and second-level domains);

2. Keyword Research and Brainstorming Tools

Keyword Brainstorming Tools

Keyword Brainstorming Tools

Tools that help expand your keyword lists with synonyms, related terms and keyword phrases.

Tools/FeaturesWhat you will find there
Google SetsRelated terms (i.e. terms that are likely to appear in lists).
MSN clustering toolWord clusters (keyword phrases).
SearchradarTag clouds and keyword definitions.
Keyword MapRelated terms (synonyms and keyword phrases).
Urban DictionaryRelated terms (related synonyms and urban words).

Social Media Based Keyword Analyzers

Social media keyword research tools

Use social media sites to explore how people use and tag your core term, its popularity and related words.

Features/ToolsTweetVolumeTwitter related terms Facebook Lexicon
Data sourceTwitterTwitterDel.icio.usFacebook
How to use it.Compare up to 3 terms popularity.See your term in live context.See your term related tags.See how often your term is mentioned across FB walls.

Online Dictionaries and Glossaries that Help with Keyword Research

DictionaryWhat you can find there:
The free dictionaryYour keyword definition(s), set phrases/ idioms (use them to lighten up your writing style), examples of usage,words of the same root (inflected words and derivations), thesaurus, classic literature mentions, keyword phrases, related acronyms.
WordnetDefinitions and sample sentences using your key term.
Rhyme ZoneRhymes (can be real fun to play with by the way), synonyms, antonyms.
Synonym.comKeyword synonyms and antonyms.
Cambridge online dictionaryEssential definitions and keyword phrases.
Meta GlossaryThe word definitions, related words and synonyms.
Reference.comYour core term synonyms and definitions.
Merriam-Webster dictionaryDefinitions and derived terms.

3. Domain Name Online Tools

Dynamic Tools for Domain Name Brainstorming:

Domain Name Brainstorming Tools

TLDs6 ( .com, .net, .org, .biz, .info, .us)3 (.com, .net, .org)3 (.com, .net and .org)
Brainstorming helpdomain name suggestions based on your previous searches and related termsshows domain names one-character shorter than the one specifiedMixes the given keywords, suggests synonyms, adds prefixes and suffixes, shows both singular and plural versions, drops last vowel, checks for both hyphen- and non-hyphen versions

Additional domain name checkers and generators:

  • DomainsBot (dynamically checks the availability of domain names for 6 TLDs: .com, .org, .net, .info, .biz, .us);
  • InstantDomainSearch (dynamically and really fast checks the availability of domain names for 3 TLDs: .com, .org, .net);
  • DomainNameSoup (suggests alternative terms for your core term, has a handy typo generator, adds words before and after your term);
  • Suggest Name and (DotoMator) – has a fairly large database of available prefixes and suffixes that are sorted out in categories;
  • NameBoy (generates the list of domain names based on your primary and secondary (optional) terms).

4. On-Site Analysis Online SEO Tools

On-page Keyword Prominence Research Tools.

Online SEO tools that help analyze keyword on-page usage.

Element to analyze:RanksSEOworkersRankQuest
Title tag+++
Meta Description+++
Headings ++
Alt tags+++
Anchor texts+++
Bold text++
Text 1-, 2-, 3-word phrases1-, 2-, 3-word phrases1-, 2-, 3-word phrases

SEO Browsers

SEO browsers

Features/ Tools Domaintools SEO browserSEO Browser
General benefits
  • find prominent elements (keywords) of the page;
  • check page elements visibility and accessibility.
Additional featuresoptimization score and tips on improving itpage meta tags, domain IP address, header response, page size, total number of links, words and images,

One more great tool to see text-only version of the site: LynxView

Page Size and Load Time Checkers

page size checkers

Features/ToolsWeb Page Speed ReportPage Size Extractor
Total page size++
Imagestotal size of the imagestotal number and size of the images
JavaScript size+
CSS size+
Each page object size+
Download time+
Additional featureslist of useful recommendations on reducing size of particular elementstotal number of hyperlinks, full list of all links on the page

Additional Site Diagnostics Tools:

  • Bad Neighborhood Tool (scans external links on a page and detects ‘bad links’).
  • Search engine SPAM detector (detects a few types of black-hat tricks: hidden text, doorway pages, keyword stuffing, etc).
  • (Recently improved) Trifecta Page/ Site/ Power tool (allows only one search per day for non-pro SEOmoz members) – offers an exhaustive report on your site/ page power and ways to improve it.

5. Search Related Online Tools

Keyword Rank Checking Tools

Online tools that check any term(s) rankings across various search engines.

Rank Checking Tools

Most valuable rank checkers:

Features/ToolsSeoMoz Rank CheckerSearch Engine Forums ToolShoemoney Serps ScriptSEObook Rank Checker
best featureArchives the resultsChecks multiple termsFast and easy to useAdvanced search options (+ international data centers)
export the resultsYesNoNoNo
several terms at a timeNoYesNoNo
# of results checked10010~1001000
overall # of SEs4141
# of SEs at a time1141
link to the actual results pageYesNoNoNo
registration requiredYesNoNoNo
term of usePaid (with daily free 5 searches)FreeFreeFree
browser pluginYes (Browser Button)NoNoNo
main drawbacksWould be great if the history/reports couldbe split into projects (i.e. domains checked) and SEsChecks only top 10 resultsNo way to export/save resultsNo export feature.

Note: the tools may be checking different data centers, so the results can be slightly different from tool to tool.

More rank checking tools:

Tools that Compare Different Search Engine Results

Compare different search engine results

Features/ToolsPraseThumbshotsFuzz Find
# of SEs3 (Google, Yahoo, MSN)2 (Google and Yahoo)3 (Google, Yahoo, Live) (
Additional FeaturesSort by Google PR; start from any result;set the min. PR to filter low-PR sitesGraphic representation of ranking differences.Highlight the site you want to trackSort the results based onany Search Engine or

More search related tools:

  • Pagerank Search allows to sort Google search results by Google PageRank or by relevance.

6. Website Traffic and Demographics Report

traffic and demographics tools

Features/ToolsAlexa.comCompete.comGoogle TrendsQuantcast
Traffic unit of measurementpercent (compared to overall Internet users measured by Alexa)number of people(average)number of unique people/ number of visits
Time range3 monthsper month(average)per month / per week
Compare trafficup to 5 domainsup to 5 websitesup to 5 websitesNo
Demographics reportNoNoNo(U.S. only)visitors’ gender distribution; age; household income; ethnicity; education.
Additional featuresShows traffic distribution across different countries; related websites; sites linking back to the one being checked(U.S. only)Reviews time spent on site compared to overall time spent in the Internet by US people (average change in this metric); average time spent on site by one person; number of pages per one visit.Reviews stats over different periods of time (e.g. past month, past year, in a given month/ yeah) on different territories (countries, states, cities). Besides, the tool will also show you “related” search queries and websitesShows audience composition (passers-by, regulars, addicts)
Ann Smarty

Ann Smarty

Brand amd Community Manager at Internet Marketing Ninjas

Ann Smarty is the blogger and community manager at Internet Marketing Ninjas. Ann's expertise in blogging and tools serve as ... [Read full bio]