some free seo tools

1. ctmetrix:- https://gtmetrix.com/
2.web developer toolbar:- https://addons.mozilla.org/en-US/firefox/addon/web-developer/
3.seoquake toolbar:- http://www.seoquake.com/
4.hootsuite:- https://hootsuite.com/
5.wayback machine:- http://archive.org/web/
6.chrome developer toolbar:- https://developer.chrome.com/devtools
7.google trends:- https://www.google.com/trends/
8.keywordtool.io:- http://keywordtool.io/
9.bing webmaster tool:- http://www.bing.com/toolbox/webmaster
10.screamming frog:- http://www.screamingfrog.co.uk/seo-spider/