Charles Proxy - HTTP proxy / HTTP monitor / Reverse Proxy
DevDojo - Dev tools and resources for building awesome stuff
Wireshark - Wireshark is a network protocol analyzer for Unix and Windows. It lets you capture and interactively browse the traffic running on a computer network.
UXsniff - Track user behavior on your website and improve conversions with UXsniff: the user experience watchdog that looks out for you.
Postman - The Collaboration Platform for API Development
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!