Wireshark is the world's foremost network protocol analyzer, and is the de facto (and often de jure) standard across many industries and educational institutions. Wireshark development thrives thanks to the contributions of networking experts across the globe. It is the continuation of a project that started in 1998.

Changelog:
- Several security-related bugs have been fixed.
- Many other bugs have been fixed, including several memory leaks.

Program Information Category: Internet and communication Type: Free Version: 1.2.2 Size: 17.4MB Works on: Windows, Mac Product page: here