From an SEO point of view, Screpy can be an interesting tool for retrieving data on competitors or on your own site.
For competitive analysis, for example, Screpy makes it easy to extract textual content, title and meta description tags, backlinks pointing to pages, and so on. This data is invaluable for comparing your strategy with that of your competitors and identifying areas for improvement.
On your own site, Screpy can help you audit and monitor your content. By regularly extracting texts and tags, you can check that SEO optimizations have been properly implemented. It also allows you to detect any technical problems that could impact SEO (content disappearance, tag changes, 404 errors, etc.).
I recommend this tool for beginners
CoolNotions