Keywordtool.io

Keyword Tool is a straightforward and highly effective SEO tool for researching keywords. It breaks down keyword data across multiple high-volume sites like Google, YouTube, Amazon, and more.

On top of that, it’s easy to dig down into essential marketing data like cost-per-click, search volume, and competition. Keep in mind that Keyword Tool isn’t an all-in-one SEO research platform, though, so the price for this software is surprisingly high.

Plans and Pricing

Keyword Tool starts at $89 per month or $828 per year, making it surprisingly expensive for a platform that only performs keyword analysis. At this price, the Pro Basic plan leaves out cost-per-click data and Google Ads competition scores, which are pretty important. You also only get one user account.