Clumsy is an open-source network simulation tool for Windows designed to degrade network conditions in a controlled environment. It captures live packets and allows you to manually inject lag, drops, or tampering to test how applications handle poor connectivity. Direct Download & Installation
Download: Navigate to the jagt.github.io download page to find the latest version.
System Requirements: It works on Windows Vista, 7, 8, and 10/11. It relies on the WinDivert driver to capture and manipulate packets. Core Features clumsy 04 v2 install download
: Randomly discard a percentage of packets to simulate packet loss. Throttling
Administrator Privileges: Because clumsy interacts with network drivers (WinDivert), it must be run as an Administrator. 3. Basic Configuration Clumsy is an open-source network simulation tool for
What I recommend:
Leo considered himself a "careful" user, but his desk told a different story: three half-empty coffee mugs, a tangle of loose Ethernet cables, and a stack of sticky notes with half-remembered passwords. The Great Fetch System Requirements : It works on Windows Vista,
| Problem | Solution |
|---------|----------|
| “Failed to start filtering” | Run clumsy as Administrator. Reboot if WinDivert is locked by another process. |
| No effect on traffic | Check interface selection; use ipconfig to confirm correct adapter. |
| System becomes slow | Reduce throttle/packet drop values; stop clumsy immediately. |
| Antivirus deletes .exe | Restore from quarantine and add folder exclusion. |
| Works for browser but not game | The game may use UDP + custom ports – use filter udp or ip.DstAddr == <game server IP>. |
Download: Obtain the latest version (typically provided as a .zip file) from the Official GitHub Repository or the GitHub Pages download site.