Welcome to the OMNeT++ Community!

OMNeT++ is an extensible, modular, component-based C++ simulation library and framework, primarily for building network simulators. "Network" is meant in a broader sense that includes wired and wireless communication networks, on-chip networks, queueing networks, and so on. Domain-specific functionality such as support for sensor networks, wireless ad-hoc networks, Internet protocols, performance modeling, photonic networks, etc., is provided by model frameworks, developed as independent projects. OMNeT++ offers an Eclipse-based IDE, a graphical runtime environment, and a host of other tools. There are extensions for real-time simulation, network emulation, alternative programming languages (Java, C#), database integration, SystemC integration, and several other functions.

OMNeT++ is free for academic and non-profit use, and it is a widely used platform in the global scientific community. Commercial users must obtain a license from More...

Featured Projects:

   INET Framework (Internet and LAN protocols)   INETMANET (mobile and ad-hoc networks)   Oversim (peer-to-peer networks)   Veins - Vehicles in Network Simulation    ReaSE (realistic Internet simulations)   MiXiM (detailed wireless simulations)   Castalia (wireless sensor and body area networks)   More...

New users: Watch the screencast for an introduction into the Simulation IDE, or see in the publications list what OMNeT++ has been used for. Check out some tutorials, browse the documentation, watch introductory videos, and explore the featured network simulation projects (click the logos above)!

OMNeT++ 4.1b4 released
Tuesday, 20 April 2010 00:00
Dear users, we've just released the fourth (last) beta of OMNeT++ 4.1. This is your last chance to report issues. Please read the ChangeLog carefully to see what has changed since the 4.0 version or check the visual change log to see the changes in the IDE. Download and try it now.

About the 3rd OMNeT++ Workshop
Tuesday, 06 April 2010 09:25

This year's International Workshop on OMNeT++ was held on March 19, 2010 in Torremolinos, in conjunction with SimuTools 2010 as usual. On behalf of the Program and Organizing Committee we can say that the workshop was a great success. We had about 10 published papers and more than 30 participants in the room.The workshop programme (including presentation slides) can be read on the workshop's web site.

Five papers have been published as regular papers with an oral presentation. Thanks to the presentation slots of 35 minutes, a fruitful discussion was started after each presentation, as the authors had the possibility to present a detailed insight of their paper. The other five papers have been published as posters also including a short presentation slot of 15 minutes. We also had the possibility to discuss community related topics. Alfonso Ariza Quintana raised the idea of modularizing the INET Framework in his presentation. Andras Varga presented about the new signals feature of OMNeT++ and about extending the IDE with wizards. The participants attested a very high quality of presentations. Thanks to the strong TPC, we have had four reviews per paper and a rebuttal period, which helped to select high quality papers for the workshop. Our general impressions was that this community is advancing and growing very fast, and with good elements to work with.

We discussed several topics in the Panel Session...

INET Framework 20100323 snapshot released
Wednesday, 24 March 2010 13:41
This is just a short announcement about the availability of the INET 20100323 stable shanpshot release. The tarball contains the automatically generated documentation and can be downloaded from the github project site:

The enhancements and additions since the latest tagged release (20090909) are ...

OMNeT++ 4.1b3 released
Friday, 12 March 2010 00:00
Dear users, we've just released the third beta of OMNeT++ 4.1. Please report any issues you encounter. We cannot fix a bug that we don't know about. Thank you and have fun with the new release.
Host Identity Protocol (HIP) Simulation Framework for INET/OMNeT++
Monday, 01 February 2010 13:12

We are proud to announce the first public release of HIPSim++, which is a Host Identity Protocol (HIP) Simulation Framework for INET/OMNeT++, developed to provide a flexible toolset for testing and validation of HIP and its extensions. HIPSim++ is fully OMNeT++ 4.x compatible, and it is built on the top of the 20090325 version of INETwithMIPv6.

Contributed by László Tamás Zeke, Levente Mihályi and László Bokor, Budapest University of Technology and Economics, Department of Telecommunications.
OMNeT++ 4.1b2 released
Thursday, 28 January 2010 00:00
Dear users, we've just released the second beta of OMNeT++ 4.1. We have included new features, documentation and bugfixes for reported issues. Please report any issues you encounter. Download and try it now.

OMNeT++ 4.1b1 released
Thursday, 14 January 2010 07:19
We are happy to announce the first beta release of OMNeT++ 4.1. This release is fully compatible with the 4.0 version so all current models should work without a problem. Download and try it now.

GT-ITM Topologies for OMNeT++ and OverSim
Sunday, 20 December 2009 12:13
GT-ITM Topologies is a complete set of tools for the conversion of network topologies following the Georgia Tech Internet Topology Model (GT-ITM) to the InetUnderlay model used by OverSim. The provided tarball includes the GT-ITM topology generator, the BRITE topology tool patched with NED language support and the necessary updates to the files of OMNeT++ for the support of weighted shortest paths.

This is a collection of already provided tools further enhanced to support the conversion of the topologies into an OverSim interpretable format (InetUnderlay). Apart from the topology structure, the created topologies provide support for routing policy weights and AS Number support, i.e. the simulation programmer can easily distinguish inter-domain from intra-domain paths.

Contributed by K.Katsaros, G.Nomikos, N.Fotiou and G.Xylomenos, Mobile Multimedia Laboratory (MMlab), Athens University of Economics and Business (AUEB).
OMNeT++ 4.0p1 released (for Linux)
Tuesday, 08 December 2009 10:40
We have created a patched version of the OMNeT++ 4.0 (called 4.0.p1), which works correctly with gcc 4.4.x. On some linux distros the IDE also stopped responding on first load because of incompatibilities with some versions of xulrunner (required by firefox). This version now should work without any problem on recent distributions. The windows version is not affected and the latest version is still 4.0.
Call for Papers -- 3rd International Workshop on OMNeT++
Tuesday, 06 October 2009 13:16

The CfP for the 3rd International OMNeT++ Workshop is now online. Come to Malaga (Spain) on March 19 2010, and meet other members of the OMNeT++ community to show your work, exchange ideas and coordinate joint efforts.

You can submit full or short papers (up to 8 and 4 pages). All accepted papers will be indexed, and selected papers will be considered for an international journal publication. The workshop will be held in conjunction with SIMUTools 2010.

Paper submission deadline is November 15, 2009.

[Call for Papers]

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