Search Engine Optimization is vital to the success of any website, but professional services are just one piece of the cake. Image what it would be like if we had to do everything manually. SEO heavily relies on SEO tools to make the process faster. Here are 20 useful SEO tools that can help webmasters get their SEO done right with little or no cost. 1.
1. Google Adwords Keyword Tool
This is a free tool available from Google intended for use with Adwords. You can use it to find new keywords, see the number of searches and the competition level. One of the most used tools on the net. 
2. Website Grader
Is a free tool that is useful for measuring how effective a website is for marketing based on user supplied keywords. This is not an absolute grade, but it can help you find things that need to be worked on. 
3. Google Website Optimizer tool
Get information about the images and copy on a website to find better layouts. 
4. XML-sitemaps.com
Is a great tool for generating a website map that will tell search engines how to crawl the website. This makes sure a site gets the best exposure possible, more pages indexed and achieve faster crawl rates. 
5. Digital Point Keyword
Is a great SEO tool that works with Wordtracker and Overture data to help webmasters find appropriate keywords for a site. 
6. SiteTrail
This is a free website monitoring tool that offers unique website analysis. 
7. Google Webmaster tools
A great selection of tools from Google helps webmasters to optimize their sites for the best treatment by their search engine. The essential tool for any webmaster, it can help you see incoming traffic, search queries used, and most of all it can help you deal with issues on your website like 404 pages and broken links. 
8. GTrends
This is a free tool from Wordtracker.com that helps find trending keywords. The basic service is free; subscription is required to get complete search results. 
9. SEOdigger
This is an SEO tool that helps identify keywords for a website that rank high in the search engines.
10. KeywordDiscovery.com
Is a free keyword intelligence tool that helps find relevant keywords for a website. 
11. SEOmoz
This site has a lot of information about SEO that is great for instruction and tips for implementing SEO on a website. Their set of SEO tools is the most used among the paying tools. They offer specific insights into backlink acquisition, website performance and keyword difficulty. There is very little SEOmoz doesn’t offer.
12. SpyFu
Find out what adwords competing websites are using. This site has some free functionality, but the best data here comes at a price. 
13. Quantcast
Is another SEO tool that helps with researching the competition. Quantcast will get you demographic information and some other tools about a competitor. 
14. Compete
Lets webmasters see how their website stacks up against as many as five others and gives useful optimization opportunities for optimization. 
15. SubmitExpress.com
Has a meta tag analyser to show whether a site’s meta information is up to par. 
16. The meta tag generator
At tools.seobook.com will help provide new meta data that will boost search engine standing. 
17. MajesticSEO
Is one of the most known backlink tools on the net. Their tools can help you research competitor backlinks and see the link velocity for past link building efforts. 
18 Raven Tools
Have a great set of various tools, similar to SEOmoz. From onpage optimization to link building tools that can help you optimize and rank your site better. 
19. The Page Strength tool
At SEOmoz gives important information about a web site’s visibility online. 
20. Ontolo link building tools
Are one of a kind. This is the ground zero for finding link opportunities and link prospecting. Their tools can help you find some of the most amazing search queries that can get you links. 
Try these 20 SEO tools and then enjoy the results of having better performing websites that attract more clicks from the search engines. But remember, tools are here to improve your speed and help you out, without your knowledge they are useless.
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Thanks for the handy reference to some great SEO tools! I look forward to more in the future.
Great article. A lot of useful info
that’s very useful information, i hope it will increase my traffic…
Thank you for bringing this to us. Some are obvious and well known, other not so, but all are useful.
Thank you for bringing this to us.
Howdy, I must say i valued browsing your blog post. Many thanks for making the effort to write it
Great info posted here. I hope I will get more info from you soon. I already bookmarked this webstite to my Favourite List.
Thank you guys I really appreciate it!
Hm, it is useful, but some of the tools are not completely free. SEOMoz have great tools but most of them are paid.
It will be great if you add theme about desktop applications.
Great tools, you should add: Google trends, Google insight.
Thanks for great SEO tools!!
Nice List . very useful for us seo guys. i know almost all of those tools except for raven tools . thanks anyway
seo copywriting services
Whats up very cool web site!! Guy .. Beautiful .. Superb .. I’ll bookmark your site and take the feeds also?I’m glad to seek out so many helpful information here in the put up, we’d like work out more strategies in this regard, thank you for sharing. . . . . .
Excellent post. I was checking constantly this blog and I am impressed! Extremely useful information particularly the final section
I maintain such info much. I was looking for this certain info for a very lengthy time. Thank you and best of luck.
Hands down the best blog for this topic, EVER. You basically just answered every question I’ve ever had, or will have in the future! Thanks so much..wish I could just come through the screen and hug ya!!
Dude, Thanks Man for sharing these awesome tools i know and i as a webmaster can understand that how important they are to optimize and analyise a website properly that would give you a lot in return!
Hello there, simply became alert to your blog thru Google, and found that it’s truly informative. I’m going to watch out for brussels. I’ll appreciate in the event you continue this in future. Numerous other people might be benefited out of your writing. Cheers!
Awesome MARK DEARMAN! Looks like a playful slider to me but really great slides. Hope I would know how to create sites like these.. esp the html5.
Simply wish to say your article regarding “SEO Tools” is as surprising. Specially Seomoz is very useful toolbar for me. The clarity in your post is just excellent and i could assume you are an expert on this subject. Well with your permission allow me to grab your feed to keep up to date with forthcoming post. Thanks a million and please continue the enjoyable work.McDowell Mountain Ranch.
Hi Alex,
Ontolo goes above and beyond the typical SEO toolset with a focus on building an arsenal of relevant information about competitors. Ontolo is unique in that it gives you a host of relevant backlinks from your competitors. Ontolo is also a fantastic tool for starting and managing multiple campaigns at once.
Regards
Marah,
internet marketing Long Beach
Very usefull article, thanx.
I knew the google keyword tool, but the other sites are new to me. It’s a nice collection of sites in 1 list though, so it’s very helpfull. Keep writing more articles like this one, i’ll follow you just in case you do.
Have a nice day,
Gregory.
Internetgeheimen ervaringen
Awesome list. Didn’t know about many of these tools. Will try all of these and see how much it helps my site. Thank you very much for sharing this post.
Great tools, I use some of them too… I am about to find out about the rest. Maybe you should add ranktracker and SEOspyglass too… they are pretty usefull to me though!
Hi thanks for adding also some updates.
Google trends etc. Often use them… very usefull for me. Alltough I am not using all of them it seems i just don’t need them al. Actually only made my internet geheimen ervaringwebsite.
Usefull tools! Thanks.