There are several SEO tools that are highly recommended by professionals in the industry. One of the widely used and popular SEO tools is SEMrush. SEMrush provides a wide range of features and functionalities for keyword research, competitive analysis, backlink analysis, site auditing, and more. It offers valuable insights and data to help optimize websites for search engines. Other notable SEO tools include Moz, Ahrefs, Google Analytics, and Google Search Console. The choice of the “must-have” SEO tool may vary depending on individual needs, preferences, and budget. It’s important to explore different tools and determine which one best aligns with your specific SEO requirements.