DevDojo - Dev tools and resources for building awesome stuff
Charles Proxy - HTTP proxy / HTTP monitor / Reverse Proxy
UX Recipe - Checklist to discover your next UX project tools/techniques
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