http://www.shunra.com上有一个产品叫做VE Desktop，可以用来模拟不同的网络条件。它允许你用一个简单的UI调整延迟、带宽和丢包。唯一需要注意的是，它不是免费的。希望这能有所帮助。

我在我的Windows电脑上使用NetBalancer。

http://seriousbit.com/netbalancer/

2017-10-07更新:NetBalancer最新免费版本为9.2.7。该程序有一个硬编码的截止日期。在启动NetBalancer服务之前，您需要在2016-10-18之前调回系统时钟。详情请参阅本文。

查尔斯

我遇到了Charles web调试代理应用程序，并在模拟网络延迟方面取得了巨大的成功。它可以在Windows、Mac和Linux上运行。

Bandwidth throttle / Bandwidth simulator Charles can be used to adjust the bandwidth and latency of your Internet connection. This enables you to simulate modem conditions using your high-speed connection. The bandwidth may be throttled to any arbitrary bytes per second. This enables any connection speed to be simulated. The latency may also be set to any arbitrary number of milliseconds. The latency delay simulates the latency experienced on slower connections, that is the delay between making a request and the request being received at the other end.

虚拟网

您也可以使用vmware来运行BSD或Linux，并尝试本文(DummyNet)或本文。

我会尝试在linux上使用netem。有了它，你可以模拟额外的延迟、损坏、丢包和复制。它甚至可以用在环回设备上。

另一个客户端程序(仅限Windows)是NetLimiter - http://www.netlimiter.com

LANforge ICE is a network emulator with an emphasis on virtual routing, jitter, corruption and delay. Projects have used it to emulate satellite link, cable and modem connections, and high-speed (10Gbit) wan emulation. You can use a Java GUI to build your virtual networks and generate very detailed reports of the traffic flow. The LANforge products also provide traffic generation features: frame, ethernet, layer-3 and stateful traffic (NFS, http). Recent editions for LANforge have sophisticated WiFi testing features as well.