180+ Best Free SEO Tools, Search Engine Optimization Softwares and Plugins

In this post you will find a huge list of Free SEO (Search Engine Optimization) Web Tools and Softwares for SEO Specialist and Web developers. This roundup of SEO Web Tools should help speed up the SEO process of a website . I hope these essential SEO Web Tools which will come in handy.

WordPress performs really well when it comes to SEO and search engine results page (SERP) rankings. Out of the box, however, WordPress has a ton of duplicate content problems. For instance, if you’re not using excerpts on the home, tags, categories pages and you are displaying the entire post, that post is being shown not only on the homepage but also on the category, tags, and archives pages too. Google and other major search engines don’t think too highly of that and your search rankings will therefore suffer. Not to worry there are plenty of WP SEO plugins available to help you optimize your WP blog. Below are all the plugins, that I am aware of, that are aimed at improving WordPress SEO.

You may be interested in the following modern trends related articles as well.

• 45+ Top SEO WordPress Plguins – WordPress SEO
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• Best SEO WordPress Plugins
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• 140+ Excellent Stylish Free WordPress Themes & Templates

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Here is a compilation of 180+ Best Free SEO Tools, Search Engine Optimization Softwares and Plugins. Enjoy!

Page Rank

1. Ranking Tool

Get a overview of your website’s ranking

2. PageRank Lookup

Check the PageRank for a website

3. PageRank Prediction

Predicted PR of a site

4. Multi Rank Checker

View your Google PageRank and Alexa Ranking in bulk

5. PageRank Checker

View your Google PageRank on differnet Google servers

Links Related

6. Reciprocal Link Checker

Check whether your link partners are linking back to your website

7. Text Link Quote

A popularity score given to a website based on inbound links

8. Link Price Calculator

A tool for checking the price of links

9. Link Checker

Check your links to see if it’s still valid or not

10. Link Popularity

Checks the total number of web pages which link to a website

11. Link Price Calculator

Help to determine the approximate amount you should be paying (or charging) per month for a text link (ad) from each and every page of the specified website

12. Site Link Analyzer

Analyze a given web page and return a table of data containing columns of outbound links and their associated anchor text

13. URL Rewriting

Convert dynamic URLs into static looking HTML URLs

14. Link Extractor

Extract links from a specific web page

15. Link Shortener

Shorten a web address

16. Backlink Anchor Text Analyzer

Check link text used by your backlinks to Link to your wesbite

Keyword Related

17. Keyword Verification Tool

Checks to see if your site is in the top three pages of a search engine result for a specific keyword

18. Keyword Density Analyser

Another SEO tools for keywords

19. Keyword Cloud

A visual representation of keywords used on a website

20. Keyword Density

Another SEO tool for checking keyword density

21. Keyword Difficulty Check

See how difficult it would be to rank for specific keywords or phrases

22. Keyword Optimize

Optimizer your keywords with this tool

23. Keyword Suggestion Tool

Find related keywords matching your search

Sitemap Tools

24. XML Sitemaps Generator

Build your Site Map online (XML, ROR, Text, HTML)

25. GSiteCrawler

Google (and Yahoo!) Sitemap Generator for Windows

26. Validate XML Sitemap

Search Engine Optimizion Tool for validating your xml sitemaps

Search Engines Tools

27. Google Analytics

Tells you everything about your visitors

28. Google Banned Checker

Check whether a site is banned by Google or not

29. Search Engine Bot Simulator

SEO Tool to simulate search engine parsing of webpages and display discovered links.

30. Indexed Pages

Check the no. of indexed pages for your blog

31. Spider Simulator

Simulates a search engine by displaying the contents of a web page

32. Search Engine Friendly Redirect Checker

Checks the exact HTTP headers that a web server is sending with an HTTP response.

33. Search Engine Position

Locate your search listings on Google and Yahoo!

34. Search Listings Preview

Preview your website on Google, MSN and Yahoo! Search

HTML Related Tools

35. HTML Encrypt

Hide your HTML source code

36. HTML Optimizer

Optimize and clean your HTML source code

37. HTTP Headers

Extract the HTTP Headers of a web page

38. HTTP Headers Viewer

Check HTTP headers for any specific URL

39. Meta-tags Extractor

Extract meta-tags information from a web page

40. Meta-tags Generator

Generate and configure your meta-tags

41. Meta Analyzer

Analyze a website’s meta tags

42. Meta Tag Generator

Help you to generate meta tags

43. Source Code Viewer

View the source code of a page

Web stats Tools

44. Whos.Among.us

Real-time stats for your website or blog.

45. Statcounter

Famous free web tracker

46. HiStats

Free, real time updated web stats service

47. Addfreestats

Provide free website statistics

Domain related

48. Alexa Traffic Rank

View and compare Alexa Ranking graphs

49. Domain Age Tool

Find out the age of your competitor’s domains

50. Domain Stats Tool

Get all kind of statistics of your competitor’s domains

51. Domain Availability

Check the availability of domains

52. Domain Look-up

Retrieve a range of information about a domain

53. Domain Whois

Retrieve domain whois information

54. Instant Domain Checker

Check the availability of domains instantly

55. Ping Test

Check the presence of an active connection

56. Reverse IP/Look-up

Resolve a host to an IP address

57. Server Status

Check if your website is online or offline

58. Website Speed Test

Find out how fast your website loads

59. What Is My IP Address

Shows your ip address

60. IP to City

Determine the Country, City, Latitude and Longitude of an IP Address

61. Website to Country

Determine the Country in which the specified website is Hosted

Google Tools and Softwares

62. Spam Report

Reporting Spam to Google Use Google to search your website

63. Website Sebmission

Submit your website to Google

64. Web Alerts

Monitor Keyword Phrases

65. Guidelines

Googles Guidelines for Websmasters

66. Facts

Facts for Webmasters

67. Contact Google

Having Trouble? Contact Google Directly

Search Engine Submissions Softwares

68. Google

69. Yahoo

You must have an account for this

70. Yahoo Directory Help

71. Yahoo Express Submit TOS

72. Yahoo Product Submit

73. MSN

74. Submit Express

75. Alexa

76. AOL

77. DMOZ Instructions

78. DMOZ Resource Forum

This is where you go when you website doesn’t show up in DMOZ after you have submitted

79. ExactSeek

Keyword Suggestion Tools

80. WordTracker & Overture Suggestions

This is the best one of the three

81. Link Analyzer

Analyze the ratio of internal links vs. external links.

82. Link Appeal

Want to know whether or not you actually want your link on that page?

83. Link City

This place has EVERY tool under the sun for everything you could ever possibly want

84. Link Reputation

Reveals backlinks pointing to the target URL along with a link survey for eack backlink.

85. Google PR Tools

A fantastic PageRank tool.

86. Protect Your e-mail address

Obfuscates your e-mail so spambots don’t pick it up from the Internet

87. Digital Points Ad Network

After using all of the tools and more on this page. This has helped out the rankings faster than anything else.

88. Sandbox Detection Tool

Is your website being sandboxed?

89. Spider Simulation

See what the spider sees on your website

90. SEO-Toys

These are some things that I had in my favorites. Some of them are okay.

91. Multiple SEO Tools

This website has a variety of misc. tools on it that you can use to better your search engine rankings.

92. Bot Spotter

This is a phenomenal script that will track what bots hit your website at what times. (Runs on PHP enabled websites)

93. Net Mechanic

This will break your website down and tell you any errors that you may be unaware of.

94. Statcounter

This will track your clients throughout the dynamically created pages of your website. This is a free service.

95. Dr. HTML

This will test your website for any errors that you may be unaware of and tell you how to fix them.

96. Page Rank Calculation

Calculates the PageRank of a webpage.

97. Adwords Suggestion

98. Overture Suggestion

Link Exchanging

99. Links Manager ($20.00US /mo)

This is great for the beginner however you will find out that you need to majorly adjust your pages manually in order to pread page rank throughout them otherwise you end up with 20 pages with no PR and 1 page with PR.

100. Page Rank Finder

101. Link Appeal

Website Design & Tools

Miscellaneous

102. FEED Validator

For Atom and RSS

103. W3C Markup Validation Service

Check for conformance to W3C Recommendations and other standards

104. Kontera Ads Preview

Preview Kontera Ads on your website

105. Online spell checker

Simple online spell checking tools

106. Browser Screen Resolution Checker

Shows what your site looks like with different screen resolutions

107. Your Browser Details

View your IP address and your browser details

108. Anonymous Emailer

Send e-mails to users anonymously

109. md5 Encrypt

Encrypt text to MD5

110. Online Calculator

A simple online calculator

111. ALink Reciprocal Link Checker

Checks Reciprocal Links

112. AMeta Meta Tag Editor

Ameta Meta tag editor

113. XML Sitemap Maker

Makes simple XML sitemaps

114. RSS Feed Maker

Simple RSS feed maker

115. Webpage Size Checker

Checks the size of the webpage

Website Design & Tools

116. Search Engine Relationship Chart

Bruce Clay does an excellent job of keeping this updated.

117. Link Popularity Checker

Checks the popularity of a link

118. Character Counting

This is great when optimizing your title or meta tags

119. Ascii-Dec-Hex Conversion Code Chart

Decimal to hex conversion chart

120. Ascii-HTML View Conversion Chart

This is an excellent resource when placing ascii code on your website. Remember to use the correct character encoding)

121. Ascii Chart in .GIF Format

An Ascii chart in GIF Format

122. Customer Focus Tool

Tells you whether your website is focused on your customers or not)

121. Dead Link Checker

Doesn’t crawl links within Frames or JavaScript)

122. Adsense Simulator

This will give you an idea of what ads will be displayed on your website before you place them

123. Page Rank Finder

This is a great tool to find quality websites with the PR that you are looking for to exchange websites with.

124. Keyword Analysis Tool

This tool is a must. It’s quick and easy to use

125. Keyword Density Analyzer

Analyzes the density of a keyword

126. Keyword Difficulty Checker

You will need a Google API for this one

127. Free Google API

Google api for making applications

128. Free Forms for your website TFMail

129. Validate Your HTML

130. HTTP Error Code Meanings

131. Keyword Tracking

132. Link Checker

133. Character Encoding

134. Converting Hex to Dec or Vias Vers

SEO WordPress Plugins

135. All in One SEO Pack

One of the most popular plugins ever for WordPress, this plugin does a bit of everything for you from helping choose the best post title and keywords, to helping you avoid duplicate content and more.

136. Automatic SEO Links

Automatic SEO Links allows you to choose a word or phrase for automatic linking, both internal and external, set anchor text, choose if it should be “nofollow” or not, and more. One of the best features of this plugin is that it will only do this for the first occurrence of a word in a post so you don’t have to worry about spamming your post with numerous links to the same thing.

137. Google XML Sitemaps

An essential tool in any blogger’s armory of SEO tools. While the name only mentions “Google,” this plugin creates an XML-sitemap that can be read by Ask, MSN and Yahoo also.

138. HeadSpace2

This plugin allows you to install all sorts of meta-data, add specific JavaScript and CSS to pages, suggests tags for your posts and a whole lot more.

139. Meta Robots WordPress plugin

An easy solution for adding robot metadata to any page you choose on your blog. You can use it to make your front page links into “nofollows,” prevent indexing of search pages, disable author and date-based archives, prevent indexing of your login page and numerous other features.

140. Nofollow Case by Case

This plugin allows you to strip the “nofollow” command from your comments, and then you can apply it to only the comments you don’t wish to support.

141. Platinum SEO Plugin

The Platinum SEO Plugin offers you such features as automatic 301 redirects for permalink changes, auto-generation of META tags, post slug optimization, help in avoiding duplicate content and a host of other features.

142. Redirection

For any number of reasons you sometimes need to move a page from one spot on your blog to another, but then you risk losing that page’s status in search results. Redirection helps you with your 301 redirects, captures a log of 404s so you can work on correcting them, sets up an RSS feed for errors and more.

143. SEO Blogroll

Do you worry that the people you link to in your blogroll are feeding off of your PageRank? With SEO Blogroll you can make separate sections for various groupings of links, with an unlimited number in each, and all of them will receive the “nofollow” attribute.

144. SEO for Paged Comments

With the introduction of paged comments in WordPress 2.7, there was a potential problem with search engines thinking you had duplicate content as the post would appear on each page. This plugin aims to take care of this issue for you until the folks at WordPress change things up.

145. SEO friendly and HTML valid subheadings

Some themes for WordPress will confuse your sub-header tags based on the page they are to be displayed on, but this plugin will automatically reset them to make them more SEO friendly by moving them down one spot in the hierarchical tree. In other words, h2 becomes h3, h3 becomes h4 and so on.

146. SEO Friendly Images

Images can be a great source of traffic as people search for images of various subjects, and this plugin helps you with making sure that you have “alt” and “title” tags on all of your images so that the search engines can properly index them.

147. SEO No Duplicate WordPress Plugin

If you must have duplicate content on your site for whatever reason, SEO No Duplicate will allow you to state which version of the post search engines should index while ignoring the others.

148. SEO Post Link

The post slug is the blog title you see in a browser’s URL bar, and if it’s too long, search engines won’t take a liking to it. SEO Post Link comes with an already populated list of words to cut from a title when it turns into a URL to make your post addresses that much friendlier. You can set it so that it’s limited to a certain number of characters, cut short words, cut unnecessary words and more.

149. SEO Smart Links

Interlinking your blog can be the key to getting more people to read more of your posts, but it is time consuming and tedious to do it by hand. SEO Smart Links does this for you automatically when you tell it what words to link to what URLs, and it also allows you to set “nofollow” and “open in window” comands for the links.

150. SEO Tag Cloud Widget

Love ‘em or hate ‘em, a lot of people use tag clouds on their blogs. Since their inception they have been fairly unreadable by search engines, but with this plugin they will be converted to an SEO-friendly HTML markup that can be indexed.

151. SEO Title Tag

Your tags are an important part of your site for making sure that search engines know where to place your posts, and SEO Title Tag focuses exclusively on this. Unlike some other plugins, and WordPress itself, this extension will allow you to add tags to your pages, your main page and even any URL anywhere on your site.

152. Simple Tags

An extremely popular plugin that focuses on helping you choose the best tags for your posts by offering suggestions, auto-completion of tags as you type, an AJAX admin interface, mass tag editing and a whole lot more.

153. Sitemap Generator

This is a more customizable sitemap generator than most with options to support multi-level categories and pages, category/page exclusion, permalink support, choices on what to display, options to show number of comments and more.

154. TGFI.net SEO WordPress Plugin

This particular plugin will do most of the usual SEO work of optimizing titles and keywords, but it adds a unique twist as it is mainly directed at people who use WordPress as a CMS.

155. WP Super Cache

This plugin is great for two reasons. First, it makes your pages load way faster. Second, since it stores static versions of your site, it requires much less CPU processing than using WordPress all by itself. This WordPress plugin is number one on the list for a reason.

156. HeadSpace 2: WordPress SEO Made Simple

Move over All in one SEO. There’s a new guy in town. HeadSpace provides you with the features you need to drive your site to the top. People spend way to much time working on SEO and too little time writing great content. This plugin let’s you put your focus back where it belongs. It takes care of all the SEO work that your blog will need.

157. Akismet

Akismet is the comment spam fighter that comes built into WordPress and it does a mighty fine job. Activate this plugin and you won’t need to moderate or captcha your comment submissions. Akismet does 99% of the work for you.

158. Backtype Tweetcount

If you’re using the TweetMeMe tweet counter badge on your blog then kill it right now. Nobody wants to authorize another program to access their Twitter account just to share a link to your site.

159. Nofollow Case by Case

This site’s comment links are dofollow. I’ve stripped out all of the nofollow tags from the comment section of Site Sketch 101. You leave a comment here and Google page rank will chase you all the way back to your site. This plugin is what makes that happen. So leave a comment here and then install this awesome WordPress Plugin at your blog.

160. WP-DBManager

This little gem is amazing for backing up your website. It actually has quite a few functions that it can perform but perhaps it’s most impressive feature is it’s ability to email the entire WordPress databse to me every day.

161. Thank Me Later

This plugin is great. It sends an email to all first-time visitors. You can write up the email to remind them about your RSS feed or just to invite them to connect with you personally. I do both.

162. WP-PageNavi

Those ‘Older Posts’ and ‘Newer Posts’ links are boring. With WP-PaveNavi you can get page buttons so users can go directly to whichever page they want. Plus they look a lot better than plain little links.

163. Permalinks Moved Permanently

Last year I moved all of my permalinks to post the page so that they wouldn’t be so long. This would have meant that all of the links to my posts would generate 404 errors. This plugin just forwards all the links and PR to the new addresses.

164. SEO Slugs

Using your entire post title as the slug for the article can make web addresses long and it can waste the opportunity to focus on using your keywords. This plugin strips out all the unnecessary words from the permalink for you so that you don’t have to.

165. SEO Smart Links

Do you inter-link your articles? You should. Linking within an article to other articles is a great way to build Page Rank throughout your site and it’s a great way to get readers to find your other articles on similar subjects. This plugin will interlink keywords to your other articles for you.

166. Subscribe to Comments

This plugin took a little bit of work to get it to work right but it’s great because it allows people to subscribe via email to any other comments that show up on a given post. This helps get readers to keep coming back.

167. WordPress Related Posts

If a reader enjoys one of your articles then one of the best things that you can do is to put some more articles in front of them to keep them digging through your site.

168. Search Excerpt

WordPress Search by default sucks. Fixing it takes a bit of work, but the heavy lifting is done by this plugin. If you want to know what I’ve done with this blogs search pages, read my post on improving the WordPress search function. The results are very cool, as you can see in this search, for instance.

169. FeedBurner FeedSmith

I use and love FeedBurner, even though it goes awry every once in a while, and the best way of using it is with FeedSmith, which I’ve been using since before it was “acquired” by FeedBurner. Just install, enter your FeedBurner ID and activate. That’s it, you’re done.

170. MailPress

With MailPress WordPress plugin you will be able to send beautiful and styled html and plain text mails for comments subscribers, your periodic newsletters or post notification (per post/daily/weekly/monthly) as well as specific admin events : registration of a new user, comment to moderate, new comment on your posts. This plugin is widget ready; it’s using Swiftmailer and Google Chart API.

171. Geotagger WordPress plugin

Geotagger is a WordPress plugin to manage your post geotags and optionally to display maps with markers and paths in your posts

172. Stray Random Quotes

Stray Random Quotes plugin helps you collect and display random quotes everywhere on your WordPress blog. The quotes can be reloaded on the blog with Ajax automation. The plugin is widget compatible, and the appearance of the quotes can be highly customized. It comes with an easy to use, advanced management tool and an option page.

173. WP-Directory-List

WP-Directory-List provides you with a categorized directory listing for Url’s and Businesses. The directory listing can range from the simple link with description to a full business address, phone, fax and contact email. You can create separate pages for each category or list all of them at one time and allow your users to add links that will be pending until approved.

174. Smart Youtube

Smart Youtube is a WordPress plugin that allows you to easily insert Youtube videos in your post, comments and in your RSS feed. The plugin is designed to be small and fast and not use any external resources. Smart YouTube also supports playback of high quality videos, works on iPhone, produces xHTML valid code and allows you to view videos in fullscreen.

175. WP Visitors WordPress plugin

WP Visitors WordPress plugin records information about every visitor (page load). Requested URL, referring URL, IP address, hostname and browser along with Date/Time are recorded and displayed in a tabular fashion. Geographical resolution of IP address (it’s only approximate) is also included.

176. WordPress Popular Posts

WordPress Popular Posts is a sidebar widget to show the most popular posts in your blog. You can set its title (or leave it blank if you don’t want to use any), how many entries to show, whether to display or not comments count and/or pageviews for each entry listed, and to show (or not) an excerpt of each post’s title. You can list your posts either by comment count, pageviews or average daily views.

177. Related Entries

Internal linking is valuable for SEO and it can also help your readers to find additional content that may interest them. Related Entries will make the process easy. Your posts will automatically include links to related posts (in a list, at the bottom of the post).

178. Antisocial

Antisocial is more SEO-friendly version of the very popular Sociable plugin. It adds no-follow tags to the links created by the plugin to social media sites.

179. WP Backlinks

Are you interested in getting more links to your blog? WP Backlinks helps you to collect and manage reciprocal links with other blogs. Other bloggers can fill out a form on your blog, add a link to you, and you will then be notified so you can add a reciprocal link.

180. WordPress SEO Master

The SEO Master plugin has two modules, the nofollow module and the meta module. Like some of the other plugins listed, it will let you add and customize meta tags, but it will also let you tell WordPress to add nofollow tags to different types of links.

181. Subscribe to Comments

This plugin took a little bit of work to get it to work right but it’s great because it allows people to subscribe via email to any other comments that show up on a given post. This helps get readers to keep coming back.