
1) Free software programmed in C
Found on
https://www.crosswordclues.com/clue/wireshark

Wireshark is a free and open-source packet analyzer. It is used for network troubleshooting, analysis, software and communications protocol development, and education. Originally named Ethereal, in May 2006 the project was renamed Wireshark due to trademark issues. Wireshark is cross-platform, using the GTK+ widget toolkit in current releases, and...
Found on
http://en.wikipedia.org/wiki/Wireshark
No exact match found.