DevDojo - Dev tools and resources for building awesome stuff
Clearbit - Clearbit provides Business Intelligence APIs
UXsniff - Track user behavior on your website and improve conversions with UXsniff: the user experience watchdog that looks out for you.
ZoomInfo - ZoomInfo is a B2B database providing detailed business information on people and companies.
Hotjar - The #1 Leader in Heatmaps, Recordings, Surveys & More. Sign up for a 15-day free trial and start learning from real user behavior today!
InsideView - InsideView aggregates and curates all the company and contact data, news and social insights, and professional connections you need to do business better.