Here is a list of free SEO online tools:

1) Wordstream

2) Keyword Eye Basic

3) YouTube Keyword Tool

4) Übersuggest

5) Anchor Text Over Optimization Tool

6) Convert Word Documents to Clean HTML

7) Copyscape

Xenu's Link Sleuth

9) Robots.txt Generator

10) Robots.txt Checker

11) URI Valet Header Checker

12) Title and Description Optimization Tool

Thank you so much guys for sharing these awesome free SEO tools here. It will help me a lot.

some links are not working why?

Quotesome links are not working why?

The writer did not include links to the tools mentioned. Which links are you referring to?

it`s good

The most powerful SEO tools are:
1. SEMRush
2. WooRank
3. AHREFs
4. Google Analytics
5. Google Search Console

Yes, these seo tools are really awesome but I don't use anyone of them. And, still I'm able to rank any keyword, any website on Google for the Top 5 position.


Thanks,
Amit

Well, SEO tools don't replace doing the right seo works, tools only help you do SEO faster and easier. Meaning, you need not use any SEO tool to rank No.1 in Search engines.  Just do the right things and you can be at the top of search engines for important keywords/phrases.

What about Neil Patel's Ubersuggest?

"Neil Patel's Ubersuggest" looks like a great tool. It seems that it is relatively new compare to some of the tools that are listed here. I just checked Neil Patel's Ubersuggest site it looks great and should be factored in. But the number of popups I was greeted with when I visited the site, I think they should reduce it, as it nearly discouraged me of doing the thing that brought me there.

)))))))))) I to you cannot believe

Alexa ranking is not working now. All tools are good that I also use. You can use the Ahrefs tool to get complete information about SEO.

yes these are very important tools for seo