LinkChecker - LinkChecker is a free, GPL licensed website validator.
Dr. Link Check - Broken link checker with malware and parked domain detection
Pulno - SEO Audit and Website Analysis. Pull up your SEO.
Maplytics - Maplytics is an integration tool between Bing Maps and Microsoft Dynamics CRM to provide geographical Dynamics 365 data visualization on a map. It allows to accurately Map Dynamics 365 CRM data of customers.
Dead Link Checker - Check for broken links on any website
Passmarked - Simple, all-in-one test to check the quality of your website