SNMP Network Simulator
SimpleAgentPro - SimpleSoft Inc. (SimpleSoft Inc.)
SimpleSoft's simulation tools enable management application vendors to develop, test, and demonstrate their applications without requiring real devices. SimpleAgentPro® is a SNMP Agent Simulator with an easy to use GUI that can simulate an entire network of LAN-WAN components made up of thousands of SNMPv1,SNMPv2C and SNMPv3 manageable devices.