Download Inzider

Inzider shows which processes listen at which ports. Inzider was the first tool that could do that in Windows, back in the 1990s. This updated version shows more information than before, including IPv6 information, svchost.exe service information, and the date and time each port was opened. Also, it doesn't have any of the stability problems that the old versions had.

Usage instructions

Download the exe file and run it from the Command Prompt. Inzider gives the most information if you run the Command Prompt as administrator.

Questions and answers

Q: How do I redirect or stop the output?

A: You can redirect the output to a file by appending for example "> file.txt" at the end of what you write at the Command Prompt. You can stop the output by appending "| more".

Q: When I double-click on the file a window comes up and disappears immediately. What's wrong?

A: You must run the file from a Command Prompt.

Q: What does the IP address "" mean?

A: It means that the process has bound the port at all available IP addresses.