Network Delay Simulator
Network Delay Simulator 1.0 is available as a free download on our software library. The software is included in Internet & Network Tools. Netsimgui.exe is the frequent file name to indicate this program's installer. This free software is a product of AKMALabs. Network Delay Simulator was developed to work on Windows XP, Windows Vista or Windows 7 and is compatible with 32-bit systems. The most popular versions of the Network Delay Simulator 1.0 and 0.9.
From the developer:
Network Delay Simulator tool allows you to perform network bandwidth and delay simulation (simulate slow/congested links between nodes) on any connection from your computer to any remote node (on the local LAN or remote over Internet).
You may want to check out more software, such as Rob Papen RP-Delay 32Bits, Robot Simulator or Mars Simulation Project, which might be similar to Network Delay Simulator.