Search volume of keywords - Any tool except adwords

Is there any tool or software that shows the keyword search volume except the adwords keyword tool.

 

you can use its http://tools.seobook.com/general/keyword-density/

 

Thanks for your response but this is a tool to check keyword density. i want to check number of searches (search volume) for keywords.

 

Here's a link to keyword suggestion tool http://tools.seobook.com/keyword-tools/seobook/index.php

 

I suggest you to use http://www.vretoolbar.com/keywords/, spacky.com & webConfs. It helps to get the high count keywords.

 

Every time I will do a research for volume of keywords, I always use this two:
*adwords keyword tool
*tools.seobook.com/general/keyword-density/