1. Google Keyword Planner: This free tool provided by Google helps you find keywords related to your business or website. It shows you the average monthly search volume, competition level, and suggested bid for each keyword.
  2. Ubersuggest: Ubersuggest is a free keyword research tool that provides you with keyword ideas, search volume, CPC, and SEO difficulty.
  3. Google Trends: This tool shows you the search volume and popularity of a keyword over time. You can also compare the search volume of multiple keywords.
  4. Answer the Public: This tool provides you with keyword suggestions based on questions people are asking online. It shows you the most common questions related to a keyword.
  5. Keyword Surfer: Keyword Surfer is a free Chrome extension that shows you search volume, CPC, and related keywords while you’re searching on Google.
  6. Soovle: Soovle is a free tool that suggests keywords from multiple search engines such as Google, Bing, Yahoo, and Amazon.
  7. Keyword Tool: Keyword Tool provides you with keyword suggestions from Google, YouTube, Bing, Amazon, and more. It also shows you the search volume, CPC, and competition level for each keyword.
  8. WordStream Free Keyword Tool: This tool provides you with keyword ideas, search volume, and competition level. You can also filter the results based on industry or location.
  9. SERPstat Keyword Research: SERPstat Keyword Research is a free tool that provides you with keyword suggestions, search volume, competition level, and related keywords.
  10. Keyword Generator: Keyword Generator is a free tool that suggests long-tail keywords based on your seed keyword. It also shows you the search volume and competition level for each keyword.