Svendsen Tech's PSnmap is an asynchronous Linux nmap look-alike for PowerShell. Ping sweeps and scans a network (accepts CIDR notation) for specified open ports. Also performs DNS lookups.

A PowerShell based module that can decode System Errors, Exit codes, port numbers, HTTP Statuses and more. This module can be used to quick lookup Error descriptions, to add verbosity to your custom error messages and for a better Error Handling, Investigation and Analysis. System Errors : Windows System Errors and Exit Codes [Total = 2764] ... More info

This function will show the Instances and the Port Numbers on a SQL Server using WMI and the status of the relevant SQL Service and its start mode

Allows redirecting requests for web domains on default port 80 to a localhost:port. Ex. gosho.com -> localhost:1111, pe6o.com -> localhost:1112

Perform External Port Scanning

This script checks if a port is currently active or in use. It checks for active TCP and UDP connections on a specified port, by process name, or by a process ID. Here are key switches to guide the script's behavior: -Port to specify the port number to check for active connections. -ProcessName to specify the name of the process to check for activ... More info

"COMPortManager: A PowerShell module for handling and relocating COM ports efficiently. Simplify COM port management tasks with this versatile utility."