SEO tools like SEOmoz, Raven SEO, and WebCEO are very useful for optimizing your website. SEOmoz, now known as Moz, helps you track rankings, research keywords, and analyze backlinks. It provides tools to improve on-page and off-page SEO. Raven SEO focuses on reporting and managing multiple SEO campaigns, making it great for agencies. WebCEO offers a wide range of features like keyword research, technical audits, and competitor analysis. These tools save time and provide valuable insights to improve your website's performance. Their usefulness depends on your goals, but they can significantly boost your SEO efforts when used effectively.