1)   Network Visualizer 4.0
RouterSim Network Visualizer 4.0 is a CCNA network simulator that allows you to design, build and configure your own network with drag and drop design. Use unlimited devices, 432 commands and work with 233 supported labs in building your networks.
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 2)   CertExams.com CCNA Network Simulator. 2.0
CertExams.com router simulator has the following features: -Several lab exercises for candidates preparing for CCNA -Cisco router console simulation with 80+ supported commands. -Network Designer -Comprehensive help file -Flash cards
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 3)   AdventNet Simulation Toolkit 5.1
Creates a virtual lab with 50,000+ devices for testing, training and demos. Support for SNMP, TL1, TFTP, FTP, Telnet and IOS devices with Traps & Informs, Autonomous Msg, Jython script, agent management via RMI , PDU Scrambler and Customization.
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 4)   SimulationExams.com CCNA Intro Exams 1.0
Practice tests for CCNA Intro (640-821) conforms to the latest exam objectives. The package contains 160+ questions with most questions carrying detailed explanations.
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 5)   SimulationExams.com CCNA ICND Exams 1.0
Practice tests for CCNA ICND (640-811) conforms to the latest exam objectives. The package contains 160+ questions with most questions carrying detailed explanations.
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 6)   CertExams.com JNet Simulator. 1.0
CertExams.com router simulator has the following features: -Several lab exercises for candidates preparing for JNCIA -Cisco router console simulation with several supported commands. -Comprehensive help file -Flash cards
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