Network Simulator

ns-3 is a discrete-event network simulator for Internet systems, targeted primarily for research and educational use. ns-3 is free, open-source software, licensed under the GNU GPLv2 license, and maintained by a worldwide community.

Recent News (Older)

  • ns-allinone-3.47 released

    A new ns-allinone release, following the February ns-3.47 release has been published. The ns-allinone release series bundles compatble extension modules with the mainline ns-3 release. This release includes fifteen compatible contributed modules, including three recently updated modules.

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  • ns-3.47 released

    ns-3.47 has been released, due to contributions from twenty-eight authors. This release adds new traffic generators from the IEEE 802.11ax evaluation methodology, support for TCP Forward Acknowledgement, and improvements to 3GPP propagation models for outdoor-to-indoor penetration losses.

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  • ns-allinone-3.46.1 released

    A new ns-allinone release, following the October ns-3.46.1 release has been published. The ns-allinone release series bundles compatble extension modules with the mainline ns-3 release. This release includes fifteen compatible contributed modules, including five newly added modules and one (wimax) that was migrated from the ns-3 mainline.

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Announcements

International Conference on ns-3 (ICNS3) 2025

Proceedings are now available for the International Conference on ns-3 (ICNS3). Many thanks to everyone who made it happen!

  • ICNS3 2026 will be held from October 19-21 at the University of Naples Federico II
Google Summer of Code

ns-3 is participating in the 2026 Google Summer of Code program.
Find out more