There are several free keyword research tools available that can help you find relevant keywords for your SEO efforts. Here are some of the most popular free keyword research tools:
Google Keyword Planner: Google's own tool is designed for advertisers, but it's free to use. It provides keyword suggestions, search volume data, and competition levels. You'll need a Google Ads account to access it.
Google Trends: Google Trends allows you to explore the popularity of search queries over time. It's useful for understanding search trends and seasonal variations.
Ubersuggest: Ubersuggest, by Neil Patel, offers keyword suggestions, search volume, keyword difficulty, and more. The free version provides a limited number of daily searches.
Keyword Surfer: This is a Chrome browser extension that provides keyword data directly in the Google search results. It shows search volume, CPC, and more.
AnswerThePublic: This tool provides questions, prepositions, and comparisons related to your keyword, helping you understand user intent better. There's a free version that provides a limited number of searches per day.
WordStream's Free Keyword Tool: WordStream offers a free keyword tool that provides keyword suggestions and data, including search volume and competition.
Soovle: Soovle is a unique tool that gathers keyword suggestions from various search engines and platforms, including Google, Bing, Amazon, and more.
Keyword Shitter: Despite its unusual name, this tool generates a large number of keyword suggestions based on a seed keyword. It's not as sophisticated as some other tools but can be useful for brainstorming.
Keywords Everywhere: Although it used to be a free browser extension, it's worth noting that as of October 1, 2019, Keywords Everywhere became a paid tool. However, it is still cost-effective and provides valuable keyword data while browsing the web.
Bulk Keyword Generator by HigherVisibility: This tool generates keyword lists based on your industry and primary keyword. It's a simple way to get keyword ideas.
Remember that while these tools offer free versions, many of them also offer paid features or more advanced data if you choose to upgrade. Additionally, combining insights from multiple tools can give you a more comprehensive understanding of the keywords that can be most beneficial for your website's SEO.
