SEO tools and it's useage and it's websites?

SEO tools:
Google Disavow: to remove broken or poor quality backlinks
Google Keyword Planner: for keyword research and analysis
Google Analytics: to monitor website traffic
Copyscape: to check the duplicity of content
Google Webmaster tool: to fix crawl errors, website insight, status of a website, indexing
Open Site Checkup: to check the SEO friendliness of a website etc.

SEO tools help to optimize your website better and rank them higher in search results. The most used tools are:

Google keyword planner
Google analytics tool
Google webmaster tool
Google Adwords
Ahrefs
Copyscape
Moz SEO tools

A1 Sitemap Generator
A1 Website Analyzer

Important SEO tools:
Google Disavow use to remove broken or poor quality backlinks
Google Keyword Planner: for keyword research
Google Analytics to monitor over all website traffic
Copyscape to check the duplicity of content
Google Webmaster tool to submit sitemap.xml and robots.txt and fix crawl errors.