A Cross-Platform PowerShell framework for creating web servers to host REST APIs and Websites. Pode also has support for being used in Azure Functions and AWS Lambda.

Svendsen Tech's SSH-Sessions module provides SSH session creation, management and interaction from PowerShell. Lets you execute commands via SSH against Linux and certain network equipment, etc. MIT license. Online documentation here: https://www.powershelladmin.com/wiki/SSH_from_PowerShell_using_the_SSH.NET_library

PSDates provides you all the tools you need when working with dates and times in PowerShell. It contains function to help you find specific date formats, get certain dates based on other dates (first/last day of the month or year, patch Tuesday, etc). I also has functions for working with timezones, unix time, WMI time, crontabs.