Displays the current bandwidth usage for every device on the network. How It Works: The Mechanism
If you are trying to resolve a specific network issue, please share you are facing, the model of your router , or how many devices are causing the slowdown so I can provide a safer, more effective solution.
SelfishNet is a network management tool written for Windows operating systems. It allows an administrator (or any user with administrative privileges) to monitor all devices currently connected to their local Wi-Fi or Ethernet network.
: Restrict your testing of SelfishNet strictly to private home subnets or authorized enterprise networks you personally own or manage.
Whether your PC connects via or a wired Ethernet cable? Share public link selfishnet v3.0.0 windows
: Using this tool on a public or shared network without permission is often considered unethical and may violate the terms of service of your ISP or workplace.
Displays active download and upload speeds for every discovered device on the network. Technical Mechanism: How It Works
. The tool will populate the IP table by scanning the local subnet (e.g., 192.168.1.0/24). This takes 5–10 seconds.
Ensure you are right-clicking the executable and choosing Run as administrator . If it still crashes, uninstall your current version of WinPcap/Npcap, download the latest version of Npcap, and reinstall it ensuring "WinPcap compatibility mode" is explicitly checked. 2. The Network Card Dropdown Menu is Empty Displays the current bandwidth usage for every device
: This is the most critical requirement. SelfishNet relies on the WinPcap library to capture and send network packets.
SelfishNet requires older .NET Framework 3.0 components. If your Windows 10/11 system prompts you, choose "Download and install this feature".
Throttling or blocking users on a public, workplace, or shared network without authorization can violate terms of service, company policies, or local laws regarding network disruption.
All traffic passes through the host PC first. The software then drops or delays data packets to enforce speed limits or blocks. Installation Requirements and Compatibility It allows an administrator (or any user with
Disclaimer: This article is for educational purposes only. The author and publisher do not condone unauthorized network interference. Always comply with all applicable laws and obtain proper consent before using packet manipulation tools.
: Many versions of SelfishNet found on unofficial sites may contain malware. It is highly recommended to download only from official repositories like GitHub .
A dedicated Windows application that allows users to control internet traffic explicitly for their own machine and specific applications, providing granular control without attacking the broader local network.
: Modern routers with "ARP Inspection" or "Source Guard" features can detect and block SelfishNet's spoofing attempts. Releases · abelmez/SelfishNet - GitHub
Uncheck any "Block" boxes and clear any numerical values in the limit columns if you plan to leave the software open.
SelfishNet is primarily used in environments with shared Wi-Fi where one user may be hogging bandwidth through heavy downloads or streaming.