The best replacement for ns2 is ns3.

The best alternatives to ns2 are rated as following:
★★★★★  ns3
★★★★  opnet
★★★★  decimator
★★  gns3
★★  omnet++
★★  qualnet
★  glomosim
★  ns1
★  system 7
★  smart gate
★  isp decimator
  ns 20
  ns20
  omnet

Your alternative for ns2 is not listed? Suggest!
Speaking about ns2, one probably shouldn't forget about sumo.

Other search terms related to ns2 and their ratings are:
★★★★★ sumo
You have in mind a companion for ns2 and it is not yet here? Propose!



Google Trends

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ns2
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