Fireshark is a tool set, made up of a Firefox plugin and a set of postprocessing scripts that captures web traffic from the core of the web browser, enabling the ability to log events and download content to disk for post-process analysis.

Main use:

• Mass Injection Analysis
• Redirection Chaining
• Deobfuscation Analysis
• Content Profiling

Fireshark is free to use. It is currently supported on Firefox browsers and released under the GPLv3 License.