There are several keyword research tools available in the market that can help you identify relevant keywords for your content or advertising campaigns. I personally use it for my website Here are some popular keyword research tools:

Google Keyword Planner: A free tool by Google that provides keyword ideas and traffic estimates. It's part of Google Ads but can be used without running an advertising campaign.

Semrush: A comprehensive SEO tool that offers keyword research, competitor analysis, and other features to improve your online visibility.

Ahrefs: Known for its backlink analysis, Ahrefs also provides powerful keyword research capabilities and competitor insights.

Moz Keyword Explorer: Offers keyword suggestions, search volume, and difficulty scores to help you prioritize and choose the right keywords.

Ubersuggest: Developed by Neil Patel, Ubersuggest provides keyword ideas, content ideas, and backlink data.

SEMrush: A popular all-in-one marketing tool that includes keyword research, SEO, and competitor analysis features.

KeywordTool.io: Helps you discover long-tail keywords for any topic, including Google, YouTube, Bing, and Amazon suggestions.

Long Tail Pro: Specifically designed for finding long-tail keywords, it provides detailed keyword competitiveness metrics.

SpyFu: Focuses on competitor analysis and allows you to see which keywords your competitors are targeting.

AnswerThePublic: Generates visual representations of questions and phrases that people use when searching for a specific keyword.

Remember that some of these tools may have free versions with limited features and paid versions that offer more advanced capabilities. The choice of a keyword research tool depends on your specific needs, budget, and preferences.