GPP is a General Purpose Proxy Java graphical application intended mainly for packet inspection and modification. It's main idea is to be a little user-friendly portable man-in-the-middle tool for security analysis. Later, some protocols should be added
jpcap is a set of Java classes which provide an interface and system for network packet capture. A protocol library and tool for visualizing network traffic is included.
jpcap utilizes libpcap, a widely deployed system library for packet capture.