Keywords Everywhere is a website that provides keyword research tools to help users optimize their online content. It offers a range of features, including keyword suggestions, search volume data, and competitor analysis. It also provides a keyword difficulty score to help users identify the most profitable keywords to target. The website also offers a free Chrome extension that allows users to quickly access keyword data while browsing the web. With its comprehensive suite of tools, Keywords Everywhere is a great resource for anyone looking to improve their SEO and content marketing efforts.