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The ns-3 network simulator

ns-3 is a discrete-event network simulator for Internet systems, targeted primarily for research and educational use. ns-3 is free software, licensed under the GNU GPLv2 license, and is publicly available for research, development, and use.

ns-3 is intended as an eventual replacement for the popular ns-2 simulator. The project acronym “nsnam” derives historically from the concatenation of ns (network simulator) and nam (network animator).

• ns-3 overview (ppt) (pdf)
• Getting Started

Downloads

ns-3 is written in C++ and Python and is available as source code releases for Linux and Unix variants, OS X, and Windows via Cygwin or MinGW.

Latest development release: ns-allinone-3.5-RC3 (ns-3.5 Release Candidate 3)

Latest stable release: ns-3.4 (April 1, 2009)

Older releases: See the downloads page.

Roadmap and Current Development

The current stable release (ns-3.4) was released on April 1, 2009. ns-3.5 is scheduled for around July 1, 2009. The summary ns-3 roadmap lists some future release plans.

Public development efforts are being tracked at this page. Our main development tree is the ns-3-dev repository. Please see our Getting Started page for how to work from the development branch.

Cumulative lines of code changed over time, for ns-3-dev

Contributing

Building a great network simulator for research and education requires many contributions from the networking community. We outline the many ways that users can contribute on our Contributing web page.

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