Charles Proxy - HTTP proxy / HTTP monitor / Reverse Proxy
Zylo - Zylo helps organizations optimize their SaaS investments by providing insights around Spend, Utilization, and User Feedback.
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.
Blissfully - Blissfully offers solutions to track, manage, and optimize SaaS spendings.
Postman - The Collaboration Platform for API Development
Zluri - SaaS Management and Identity Governance Platform for IT Teams