Charles Proxy - HTTP proxy / HTTP monitor / Reverse Proxy
Horangi - Horangi is a leading cyber-security solution that provides instant response and threat detection for companies who lack the time and expertise to monitor their system.
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.
PracticeProtect - Network security & identity management
Postman - The Collaboration Platform for API Development
Acunetix - Audit your website security and web applications for SQL injection, Cross site scripting and other...