Ostinato is an open-source, cross-platform network packet crafter/traffic generator and analyzer with a friendly GUI. Craft and send packets of several streams with different protocols at different rates. Ostinato aims to be "Wireshark in Reverse" and become complementary to Wireshark.

Features: * Open, edit, replay and save PCAP files * Support for the most common standard protocols - Ethernet/802.3/LLC SNAP - VLAN (with QinQ) - ARP, IPv4, IPv6, IP-in-IP IP Tunnelling (6over4, 4over6, 4over4, 6over6) - TCP, UDP, ICMPv4, ICMPv6, IGMP, MLD - Any text based protocol (HTTP, SIP, RTSP, NNTP etc.) * Modify any field of any protocol (some protocols allow changing packet fields with every packet at run time e.g. changing IP/MAC addresses) * User provided Hex Dump - specify some or all bytes in a packet * User defined script to substitute for an unimplemented protocol (EXPERIMENTAL) * Stack protocols in any arbitrary order * Create and configure multiple streams * Configure stream rates, bursts, no. of packets * Single client can control and configure multiple ports on multiple computers generating traffic * Exclusive control of a port to prevent the OS from sending stray packets provides a controlled testing environment * Statistics Window shows real time port receive/transmit statistics and rates * Capture packets and view them (needs Wireshark) * Framework to add new protocol builders easily