Neil Patel's UberSuggest is a SEO research tool. In particular, it helps you
Ubersuggest is a SEO research tool similar to Moz, Ahrefs etc. It helps you generate keyword ideas to guide your content strategy, finds which keywords and pages are working for you and analyzes your site to find SEO mistakes or opportunities to help you rank better.
Many users find Ubersuggest helpful for preliminary research. Its free to use upto a certain extent and requires login for the next level of research. Overall it's usage is growing in the past year.