This module enables you to gather folder size information, and output the results easily in various ways. GitHub Repo: https://github.com/gngrninja/PSFolderSize

File Management Functions

PowerShell module containing several Azure tools by Sam Boutros

Miscellaneous functions and utilities for Windows System Administrators.

A collection of scripts from David Retzer

Get-FolderSize return the size of folder recursively (1 of depth by default) as a object (exept if the -OutGridView parameter is specify)

Omnicit PowerShell Toolbox - OPT

JaapsTools

Get Size of Folder fast using Robocopy