is a popular, open-source network simulation utility designed for Windows that allows users to intentionally degrade their network performance in a controlled environment. By utilizing the powerful Windows network filtering utility known as WinDivert, Clumsy intercepts live system-wide network packets, allowing users to introduce lag, drop packets, or tamper with data on demand.
I can provide the exact filtering rules and parameters for your project. Share public link
Extract the contents of the ZIP folder to a dedicated directory on your computer.
Set a percentage chance for packets to be deleted (e.g., 5 for 5% packet loss). Step 3: Start the Simulation
When testing fast-paced scenarios, manually clicking the UI buttons can slow you down. You can create a macro to toggle Clumsy instantly using an automation tool like AutoHotkey. autohotkey clumsy 04 v2 download top
PowerShell can be used for basic traffic manipulation, though it lacks the user-friendly interface of Clumsy. Conclusion
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: ip.DstAddr == 192.168.1.50 or ip.SrcAddr == 192.168.1.50 Use code with caution. Targeting specific communication ports : tcp.DstPort == 8080 or udp.DstPort == 27015 Use code with caution. Streamlining Workflows with Automation Hotkeys
: Some versions of Clumsy offer customization options for characters or levels, adding a personal touch to the gameplay. Share public link Extract the contents of the
Clumsy is intended for lawful purposes only:
Clumsy stands out from other network simulation tools due to its unique set of features:
is a network simulation utility for Windows that allows you to intentionally worsen your internet connection for testing or gaming purposes. It captures live network packets and lets you lag, drop, or tamper with them on demand.
Clumsy is a free, open‑source, Windows‑based utility that allows you to artificially worsen your internet connection in a controlled and interactive way. With it, you can simulate common network problems like high latency (lag), packet loss, throttled bandwidth, data corruption, and more. While it might sound counter‑intuitive, making your network "bad" on purpose is a powerful strategy to stress‑test your applications and ensure they remain usable under the worst possible conditions. Best of all, Clumsy does not require you to install anything or modify a single line of your source code. It operates at the system level, intercepting network packets for all Windows applications, from command‑line tools to graphical programs. You can create a macro to toggle Clumsy
: Any packet traveling through the system matching the filter is redirected from the OS network stack directly to Clumsy.
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Game developers use Clumsy to see how netcode handles high latency and packet loss. It helps engineers optimize lag compensation algorithms, state synchronization, and rubber-banding fixes before launching a patch to the public. Software Quality Assurance (QA)
Download the appropriate compressed archive matching your operating system architecture (typically clumsy-0.3-win64 for modern 64-bit variants of Windows). 3. Extract the Utility