There are many tools that can be used to conduct an SEO audit, including both free and paid options. Some common tools that are often used for this purpose include Search Console, Google Analytics or other Analytics tools, SEMrush or Ahrefs or simlar tools, Screaming Frog or other page crawlers, PageSpeed Insights, GTmetrix, and the Structured Data Testing Tool. These tools can be used to conduct a variety of different types of analysis, including keyword research, on-page optimization, technical SEO, and link building. Some tools may focus on specific areas of SEO, while others offer a more comprehensive suite of features. It's important to choose the right tools for your specific needs and to use them in conjunction with manual analysis to get the most comprehensive and accurate results.