Keyword generator?

Does anyone know any quality & free keyword generator tool?

Thanks.

 

You mean like this one: http://www.digitalpoint.com/tools/suggestion/?keywords= ?

 

No. I need a tool which will automatically generate a huge number of related keywords.

For example, if I write down a keyword "create website", then it should give me a result like:

create website
create websites
create web site
create web sites

develop website
develop websites
develop web site
develop web sites

website development
websites development
web site development
web sites development

And so on...

 

Keyword Research and Finding Profitable Keywords

 

http://www.goodkeywords.com/

 

overture has a keyword tool which shows the popular searches. it lists all the related searches in order from most searched to least searched. i use that tool to get an idea of the most popular keywords

 

Thanks, but that's still not that what I need.
I know all of them.

Any other refers?
Thanks.

 

maybe this:
-http://www.metys.net/blog/semantics-related-tags/