Navigate to the installation folder (or the extracted ZIP folder), right-click Selfishnet.exe , and select Send to > Desktop (create shortcut) .

SelfishNet v3.0.0 is a rare breed of software: an old-school networking tool that has been revived for the modern era. It provides a powerful, lightweight, and highly effective method for taking control of your local Wi-Fi or Ethernet network. With its ability to instantly discover all connected devices, limit their bandwidth, or block them outright, it puts the kind of power that was once reserved for network administrators into the hands of everyday Windows users.

To understand what SelfishNet does, it helps to grasp the underlying technology: .

Upon launch, a small dialog box will prompt you to select your network interface card (NIC).

The application requires no formal installation and consumes minimal system resources. System Requirements

Ensure the mode is active. The target machine will instantly lose its internet connection, though it will technically remain registered to the local Wi-Fi router. Important Security and Performance Considerations

Unlike standard Quality of Service (QoS) settings, Selfishnet works without needing the router’s username or password. System Requirements and Installation

Set up directly on your router Share public link

Imposes hard ceilings on the incoming down-link speed of a specific node Integer (Manual Value Input)

: Since it uses ARP spoofing, some antivirus software may flag it as a threat. Installation and Usage Tips

From a technical standpoint, v3.0.0’s refinement for Windows is notable. Earlier versions were often unstable or required complex command-line inputs. Version 3.0.0 brought a more intuitive graphical interface, improved compatibility with Windows 10 and 11’s network stacks, and more stable ARP spoofing routines. It allows users to see IP addresses, MAC addresses, and real-time bandwidth consumption, transforming an invisible chaos into a manageable dashboard. For a network administrator troubleshooting a congested office, this visibility is invaluable.