Ostinato is a network packet and traffic generator and analyzer with a friendly GUI. It aims to be "Wireshark in Reverse" and thus become complementary to Wireshark. It features custom packet crafting with editing of any field for several protocols: Ethernet, 802.3, LLC SNAP, VLAN (with Q-in-Q), ARP, IPv4, IPv6, IP-in-IP a.k.a IP Tunneling, TCP, UDP, ICMPv4, ICMPv6, IGMP, MLD, HTTP, SIP, RTSP, NNTP, etc. It is useful for both functional and performance testing.
Cyberprobe is a distributed architecture for real-time monitoring of networks against attack. The software consists of two components: cyberprobe, which collects data packets and forwards it over a network in standard streaming protocols; and cybermon, which receives the streamed packets, decodes the protocols, and interprets the information. Cyberprobe can optionally be configured to receive alerts from Snort. In this configuration, when an alert is received, the IP source address associated with the alert is dynamically targeted for a period of time. Collecting data and forwarding over the network to a central collection point allows for a much more "industrialized" approach to intrusion detection. The monitor, cybermon, is highly configurable using LUA, allowing you to do a great many things with captured data: summarize, hexdump, store, and respond with packet injections.