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.

App-Ray - App-Ray provides a cutting-edge solution for you to conduct a system-wide analysis and detect vulnerabilities in your mobile applications.

tcpdump - tcpdump is a common packet analyzer that runs under the command line.

Ostorlab - Ostorlab scans your web or mobile application and provides results showing threats and privacy issues.

netcat - Netcat is a featured networking utility which reads and writes data across network connections...

Traced for Android - Traced is a free cybersecurity app for Android. It detects suspicious activity from apps and unsecured Wi-Fi connections that might be used to spy on you or invade your privacy.