Reports on all the content items missing a translation in Sitecore.

MissingLanguageVersionReport.ps1

<#
  .SYNOPSIS
    Reports on all the content items missing a translation in Sitecore.
#>

$languageNames = Get-ChildItem -Path "master:\" -ID ([Sitecore.ItemIDs]::LanguageRoot) | 
    Select-Object -ExpandProperty Name
    
$groups = Get-ChildItem -Path "master:\content\" -Recurse -Language * | Group-Object -Property Name | Where-Object { $_.Count -lt $languageNames.Count }

$reportData = @()
foreach($group in $groups) {
    $missingLanguageNames = $languageNames | Where-Object { $group.Group.Language -notcontains $_ }
    $item = $group.Group | Select-Object -First 1
    Add-Member -InputObject $item -MemberType NoteProperty -Name "Missing Language" -Value ($missingLanguageNames -join "<br/>")

    $reportData += $item
}

$reportData | Show-ListView -Property Name, "Missing Language"