Our good friends over at Dorian Software are making version 6 of their UltraAdmin tool free.
From Dorian’s blog:
As promised, version 6 of UltraAdmin® is now available for download from the Dorian Software website. This version is being made available at no charge to any network administrator who wishes to use it. For those organizations and individuals that need priority support for the product, you can purchase it here.
You can see a list of UltraAdmin’s features here.