• [WANsim] WAN simulators and emulators, http://www.wan-sim.net/
• [OPNET] OPNET Modeler, http://www.opnet.com/
• [NS2] NS2 official website, http://www.isi.edu/nsnam/ns/
• [NS2-wiki] NS2 resource webpage, http://nsnam.isi.edu/nsnam/index.php/Main_Page
• [NS3] NS3 official website, http://www.nsnam.org/documents.html
• [OMNeT] OMNeT++ official website, http://www.omnetpp.org/
• [REAL] REAL 5.0 simulator overview, http://www.cs.cornell.edu/skeshav/real/overview.html
• [SSFNet] Scalable Simulation Framework (SSF), SSFNet homepage, http://www.ssfnet.org/homePage.html
• [J-Sim] J-Sim homepage, http://www.j-sim.org/
• [QualNet] QualNet official site, http://www.scalable-networks.com/products/
• [YANS], Yet Another Network Simulator , http://yans.inria.fr/code/yans/?summary
• [GTNetS] The Ge orgia Tech Network Simulator (GTNetS) , http://www.ece.gatech.edu/research/labs/MANIACS/GTNetS/

还会有很多，利用开源工具进行网络模拟与仿真方面的研究比较好，便于理论与实践的紧密集成，但要基本掌握几门语言，比如C/C++、Java、python、tcl等几类语言（面向对象、过程式、动态语言等）