Xenu's Link Sleuth - Xenus Link Sleuth checks Web sites for broken links.
Website Checker Tech - WebsiteChecker.Tech is SaaS tool that detects SEO and availability issues of your website, making it easier for you to fix them.
Screaming Frog SEO Spider - The Screaming Frog SEO Spider is a small desktop program (PC or Mac) which crawls websites’ links...
SEMRush - All-in-one Marketing Toolkit for digital marketing professionals.
SiteAnalyzer - SiteAnalyzer it's a desktop Crawler, designed to SEO audit and analyze website content to identify technical and SEO-optimization errors. After scanning your website, SiteAnalyzer will display all the technical and SEO errors and help to fix them!
Sitechecker - All-in-one SEO platform including rank tracker, website SEO audit tool and website changes monitoring. Detailed reports by 100+ parameters with how-to-fix guides.