PowerShell, adaptado da resposta de Shay Levi nos Grupos do Google .
# Set BrowserNavConstants to open URL in new tab
# Full list of BrowserNavConstants: https://msdn.microsoft.com/en-us/library/aa768360.aspx
$navOpenInNewTab = 0x800
# Get running Internet Explorer instances
$App = New-Object -ComObject shell.application
# Grab the last opened tab
$IE = $App.Windows() | Select-Object -Last 1
# Open link in the new tab nearby
$IE.navigate('http://bing.com', $navOpenInNewTab)
# Cleanup
'App', 'IE' | ForEach-Object {Remove-Variable $_ -Force}