Wireshark

About

Wireshark is a free and open-source packet analyzer. It is used for network troubleshooting, analysis, software and communications protocol development, and education.

Key Features

• Deep inspection of hundreds of protocols
• Live capture and offline analysis

Pros

• Powerful filtering capabilities
• Cross-platform support (Windows, macOS, Linux)

Cons

• Steep learning curve 🧗
• Can be resource-intensive