For organic search engine optimization you have to use some basic tools like
> Google Webmaster Tool
> Google Analytics
> Google Keyword Planner
> Google Adwords
> OpenSite Explorer (To track your back-links)
Tools used in search engine optimization:
1. Google analytics
2. Google Search console
3. Google keyword planner
4. SEO MOZ
5. SEMRush
6. Pagespeed optimization tools
7. Google Trends
8. Ahrefs tool
9. WooRank
10. SEOPtimer... etc are the main tools for Search engine optimization...