Get Reminded of Outdated Modules in Powershell. See https://communary.net/2016/02/21/get-reminded-of-outdated-modules/

Get-OutDatedModule.ps1

function Get-OutDatedModule(){
  $loadedModules = Get-Module
  foreach ($module in $loadedModules) {
      $foundModule = Find-Package -Name $module.Name -ErrorAction SilentlyContinue
      if ($foundModule) {
          if ($module.Version -lt $foundModule.Version) {
              Write-Host "$($module.Name): Installed version: $($module.Version.ToString()) - Newest version: " -NoNewline
              Write-Host "$($foundModule.Version.ToString())" -ForegroundColor Red
          }
      }
  }
}