Editors' Note: Beta or prerelease software is not intended for inexperienced users, as the software may contain bugs or may potentially damage your system. We strongly recommend that users exercise caution and save all mission-critical data before installing or using this software.
Wireshark is the world's foremost network protocol analyzer, and is the standard in many industries. It is the continuation of a project that started in 1998.
Features includes deep inspection of hundreds of protocols, with more being added all the time, Live capture and offline analysis, Standard three-pane packet browser, Captured network data can be browsed via a GUI, or via the TTY-mode TShark utility, and Rich VoIP analysis.