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.
Get ns-3:
Most recent stable release: •  Download ns-3.27 code
•  View documentation Other releases and docs: •  All releases
•  All documentation


Get involved:
Current activities:
•  ns-3.28 release

Mailing lists:
•  For users
•  For developers


Building a great network simulator for research and education requires many contributions from the community. The NS-3 Consortium provides organizational and financial support to the open source project.