Why WhoIsConnected?
Applications on a modern PC can communicate with Internet networks in the background. Some connections may support functions you use; others may be communications you do not need or do not want.
Do you know which applications are communicating, where they are connecting, and how that activity changes over time?
WhoIsConnected helps you see that activity, investigate applications and networks, and decide which communications you want to allow.
WhoIsConnected Principle
It is your computer and your network connection. You should be able to see what is communicating and decide for yourself which communications you want to allow.
Getting Started
Installing WhoIsConnected
Download, install and start WhoIsConnected.
Application Selection & Control
Select one application, terminate it, or use Premium application-level network blocking and unblocking.
App Details
Investigate the applications currently shown, including characteristics that may deserve closer attention.
Network Selection & Connection Control
Select a network connection of an application and stop it or block its IP address or network range.
Network Details
Identify network ownership, contacts, address ranges and how broad a network block can be.
Connection History
WhoIsConnected Logger
See newly detected and closed connections across refreshes and investigate network activity that may disappear from the current view.
Analysis
AI Information
Use AI-assisted analysis to evaluate selected application and network pairs and understand the Behavior Score and risk colors.
Support & Premium
Frequently Asked Questions
Answers about monitoring, Logger, privacy, AI and network control.
Premium Edition
Advanced details, AI analysis and network-control capabilities.
Premium License
License scope, purchase, renewal and expiration information.
Report a Problem
Report a problem, send a comment, or suggest an improvement to WhoIsConnected.
Language Selection
WhoIsConnected is available in English, German and Simplified Chinese. You can change the application interface language at any time from the main menu (☰).