Dr. Link Check - Broken link checker with malware and parked domain detection
Mailshake - Mailshake lets you build your professional network through a smart and intuitive approach to cold emailing.
LinkChecker - LinkChecker is a free, GPL licensed website validator.
lemlist - Send emails that get replies ๐
SiteInspector - Catch spelling/grammar errors and broken links on websites.
SuperSend.io - Automate Cold Outreach Across Email, Linkedin and Twitter.