get 'youngest' process with some filter possibilites

Get-LatestProcesses.ps1

param(
  [Parameter(Mandatory = $False)]
  [int]$NumberOfProcesses = 1, 

  [Parameter(Mandatory = $False)]
  [switch]$IncludeMicrosoftProcesses,

  [Parameter(Mandatory = $False)]
  [switch]$RequirePath,

  [Parameter(Mandatory = $False)]
  [string[]]$IgnoredProcesses
)
$ErrorActionPreference = "Stop"

$procs = if (-Not $IncludeMicrosoftProcesses) {
  Get-Process | Where-Object {$_.company -notmatch 'microsoft'}
}
else {
  Get-Process
}

if ($IgnoredProcesses) {
  $procs = $procs | Where-Object {$IgnoredProcesses -notcontains $_.Name}
}

if ($RequirePath) {
  $procs = $procs | Where-Object {$_.path}
}

Write-Output ($procs | Select-Object ID, Name, Path, StartTime, @{Name = "RunTime"; Expression = {(Get-Date) - $_.StartTime}}, WS, VM, Company `
    | Sort-Object StartTime -descending `
    | Select-Object -first $NumberOfProcesses)

while (1) {
  $p = ./Get-LatestProcess.ps1
  if ($p.RunTime.TotalMinutes -gt 1) {
    Write-Host "INACTIVITY ALERT! last app '$($p.Name)' is alive for $($p.RunTime.TotalMinutes) minutes."
  }
  Start-Sleep -Seconds 10
}