Dr. Link Check - Broken link checker with malware and parked domain detection
SEMRush - All-in-one Marketing Toolkit for digital marketing professionals.
LinkChecker - LinkChecker is a free, GPL licensed website validator.
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.
SiteInspector - Catch spelling/grammar errors and broken links on websites.
SEO Site Checkup - Find comprehensive search engine optimization (SEO) tools for your site.