= The Overlay Framework =

!OverSim is an open-source overlay and peer-to-peer network simulation framework for the [http://www.omnetpp.org/ OMNeT++/OMNEST] simulation environment. The  simulator contains several models for structured (e.g. Chord, Kademlia, Pastry) and unstructured (e.g. GIA) P2P systems and overlay protocols.

!OverSim is developed at the [http://www.tm.uka.de/itm/index.php?lang=en Institute of Telematics (research group Prof. Zitterbart)], Universität Karlsruhe (TH) within the scope of the [http://www.scalenet.de ScaleNet] project funded by the [http://www.bmbf.de/en/index.php German Federal Ministry of Education and Research]. The simulator is actively developed and open to contributions. If you have any questions regarding !OverSim, please send an email to the MailingList.

'''If you write a paper using !OverSim, please use the following citation: [http://www.tm.uka.de/itm/publications.php?bib=250&lang=en bibtex reference]'''.

= News =

July 7, 2010
  * [http://www.tm.uka.de/itm/WebMan/view.php?view=news_detail&id=76&lang=en Open position] for a PhD student in a junior research group working on the topic of ''distributed social networks''. This position includes the development and evaluation of new protocols with !OverSim.

May 26, 2010
  * Released [OverSimDownload OverSim-20100526].
    * NICE overlay: now compatible to Scribe/generic ALM API
    * New ALM test application
    * New generic network coordinate system (NCS) interface
    * Optimized NCS-based RPC-time-out calculation
    * Kademlia: Replacement cache as described in the paper
    * Example overlay (!MyOverlay) and application (!MyApplication) added
    * Support for confidence intervals in post-processing scripts
    * GCC 4.4 compatibility
    * Many other bugfixes and enhancements (take a look at [/chrome/site/doc/ChangeLog doc/ChangeLog])

September 9, 2009
  * We successfully presented !OverSim at the [http://www.p2p09.org/ IEEE P2P'09] in Seattle, USA. After giving an [http://www.tm.uka.de/itm/WebMan/view.php?view=publikationen_detail&id=360 invited talk] in the [http://edas.info/W.php?page=133#18619 "Evaluation Tools Session"] we presented !OverSim's features for real network application in the following demo session.  

[OldNews [Old News...]]

{{{
#!html

<table cellspacing='0' cellpadding='24' border='0' width='80%'>
<tr>
<td>	<a href="../chrome/site/pics/ChordIPv4.png" target="blank"><img src='../chrome/site/pics/ChordIPv4_small.png' alt='Chord IPv4' ></a></td>
<td>	<a href="../chrome/site/pics/Chord-Ring.png" target="blank"><img src='../chrome/site/pics/Chord-Ring_small.png' alt='Chord ring'></a></td>
<td>	<a href="../chrome/site/pics/GIA.png" target="blank"><img src='../chrome/site/pics/GIA_small.png' alt='GIA'></a></td>
</tr>
</table>

}}}

== Good Starting Points ==

 * OverSimGuide -- Starting point for the '''!OverSim documentation'''.
 * OverSimFeatures -- Already available and planned !OverSim features.
 * OverSimDownload -- Download !OverSim on this page.
 * MailingList -- Join the mailinglist for user and developer discussions.
 * OverSimPublications -- Publications related to !OverSim
 * OverSimTeam -- The core developers of !OverSim.
 * [http://www.p2pns.org P2PNS/P2PSIP] -- A distributed name service for P2PSIP built with !OverSim

For a complete list of available wiki pages, see TitleIndex.