SEMRush - All-in-one Marketing Toolkit for digital marketing professionals.
Monitor Backlinks - Easy Link Management - SEO Tool for automatically checking your backlinks.
Lumar - (Previously DeepCrawl) Hosted SEO spider to analyze and find problems with websites.
Topvisor - All in one SEO and PPC tools for better marketing.
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.
Botify - Traffic Managers, SEO Managers, Webmasters:Crawl your site to extract all of its metadata and identify areas for improvement