Projects / Ostinato


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.

Operating Systems

Last announcement

Ostinato binary package for Ubuntu 14.04 LTS 22 Apr 2014 15:12

Ostinato binary package is now available for Ubuntu 14.04 LTS Go to

Recent releases

  •  17 Jun 2014 15:31

    Release Notes: A beta release of the Ostinato Python bindings is now available.

    •  01 Aug 2012 17:17

      Release Notes: This minor release improves statistics for Linux, BSD, and OS X, and fixes several bugs.

      •  25 Oct 2011 17:03

        Release Notes: Focused on performance, this release has improved maximum traffic generation rates (pps) up to 25 times on Linux and up to 60 times on Windows. The time taken to "apply" changes to stream(s) has been significantly reduced. A new "Interleaved Streams" transmission mode has been added. Support has been added for "Pkts/Sec" and "Bytes/Sec" rate stats on Linux, transmit rates of less than one pps, nanosecond resolution while calculating inter-packet gaps and display/configuration of port rate averaged/aggregated across all enabled streams on the port.

        •  12 May 2011 14:03

          Release Notes: This is a bugfix release. "Save As PCAP" was fixed for Linux distributions where the file was being saved in Ostinato format rather than PCAP. A compilation problem with protobuf 2.4.0 was fixed.

          •  19 Apr 2011 15:21

            Release Notes: Support has been added for PCAP file import/export. Other changes include support for jumbo frames (up to 16K), usability enhancements, and bugfixes.


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