Check a Site - Scan websites for over 700 quality problems
Betatesters.io - The platform connecting mobile developers and beta testers
Beta Family - 50,000 testers to test your app
Betafy - Where startups meet beta users!
BrokenLinkCheck - Free Broken Link Checker / Online Dead Link Checking Tool - find bad hyperlinks
Sqreen - Sqreen is a web application security monitoring and protection solution helping companies protect their apps and users from attacks. Get started in minutes.