Those who have used SharePoint for developing applications, they might have used STSADM executable. Here is an interesting utility that gives a UI for STSADM. This utility is developed as a windows application. It has a dropdown that displays all the STSADM options. Once a specific option is selected from the dropdown, it displays textboxes for various parameters.
See this post to download, to know more about STSADMWin utility.