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Nessi is a network simulator for computer network. It is designed to simplify and speed-up the development of simulation models. As such it is mainly oriented toward educational purposes, where students can implement the most important mechanisms of current protocols with a minimum of overhead. A second application of Nessi is rapid prototyping of new protocols in order to verify the correct functioning of the protocol.

Nessi is licensed under GPL version 2.

Current status

The current version of Nessi is out-of-date and is currently being updated.

  • July 30, 2012: Nessi runs on recent Python versions. Can run the simulations in the Examples folder. Plot Window not yet working.

Installation instructions

Nessi is multi-platform and runs on Linux, Windows and Mac OS X.


You will require:

  • Python 2.7 or higher
  • python-wxgtk2.8 or higher
  • python-matplotlib 1.1.1rc or higher

Contact information

Juergen Ehrensberger

School of Business and Engineering, Vaud (HEIG-VD)

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