Powershell IIS Application pools list

Import-Module WebAdministration
dir IIS:\Sites # Lists all sites
dir IIS:\AppPools # Lists all app pools and applications

# List all sites, applications and appPools
dir IIS:\Sites | ForEach-Object {
  # Web site name
  $_.Name
  # Site's app pool
  $_.applicationPool
  # Any web applications on the site + their app pools
  Get-WebApplication -Site $_.Name
}