Pakkit

Pakkit is an innovative network tool that combines TCP connection monitoring with packet capture functionality. Pakkit displays all TCP connections in use since it was started, along with useful metadata such as the owning process, source and destination IP addresses and amount of data transferred. At any point, the user can select any number of connections and right-click to generate a pcap containing all packets sent and received by those connections.

Requirements:

.NET Framework 3.5 or higher, WinPcap