The Wireshark development team has released Wireshark version 1.6.0 of its open source, cross-platform network protocol analyzer.
This new version of Wireshark improves support for large files and has some new features such as the ability to export SSL session keys and SMB objects. The users can now import text dumps into Wireshark and TShark, similar to text2pcap. Further, TShark can now display iSCSI, ICMP and ICMPv6 service response times.
Wireshark is now distributed as an installation package rather than a drag-installer on OS X. The installer adds a startup item that should make it easier to capture packets. Please visit Wireshark version 1.6.0 release notes for a complete list of changes.
Wireshark is licensed under version 2 of the GNU General Public License. It can be download here.