I've tried other tools over the years, but nothing comes close to Screaming Frog when you're trying to "look under the hood" of a website and find issues, opportunities and information. I don't love the relatively high yearly cost, especially when I'm only using it for myself, but I suck it up and pay it anyway, because that's how valuable it is to me. I couldn't manage my websites, or my clients' sites, without this valuable website crawling tool. I use it for so many things - improving technical SEO, finding specific content (e.g. links, keywords, contact details) across hundreds of pages, creating sitemaps, analysing content, capturing site meta data, and SO much more. It's a tool I can't live without.