15. GTmetrix
14. Web Developer Toolbar
13. SEO Quake Toolbar
12.Hootsuite
11. Wayback Machine
10. Chrome Developer Tools
9. Google Trends
8. Keywordtool.io
7. Bing Webmaster Tools
6. Google (and Bing)
5. Screaming Frog
4. Google Keyword Planner
3. Moz
2. Google Search Console
1. Google Analytics