Fortunately, there are several SEO Search Engine Optimization tools that are available to help you track the latest updates and assess whether or not your SEO efforts are up to the mark. In this regard, Grazitti Interactive puts together a comprehensive Infographic, highlighting a wide range of SEO tools. Here are some of the key insights from their research. Keyword Research Tools. When it comes to keyword research tools, SEMrush tops the charts with 5 million users and 18 billion keywords. It enables the users to get a deeper look at their competitors website and analyze keywords accordingly. KW Finder by Mangools. Answer the Public. Content Optimization Tools. Content Optimization Tools refer to software that enables users to find the right keywords and measure the success of their existing content.