Dr. Link Check - Broken link checker with malware and parked domain detection
GoodUI Evidence - People's A/B test results that show which UI ideas work best
LinkChecker - LinkChecker is a free, GPL licensed website validator.
Decidr - Make better decisions with quick A/B polls
SuperSend.io - Automate Cold Outreach Across Email, Linkedin and Twitter.
Zarget - Zarget is new age AB testing and Heatmap software that lets you optimize your website with just a few clicks thereby increasing sales.