Which are the best tools to do keyword research?

Some of the best keyword tools are keyword planner, ahrefs, keyword everywhere, etc.

Google keyword planner is the best free tool for high quality keyword research. They help to provide various keyword suggestions for your domain, and selecting the right keywords will help to rank your website higher in search results.

Best Keyword Research Tool
Soovle
Jaaxy
Ahrefs Keywords Explorer
SECockpit
Google Keyword Planner
KeywordTool.io
Moz Keyword Explorer