SharePoint Administration Toolkit v3.0
The Microsoft SharePoint Administration Toolkit contains functionality to help manage Microsoft Office SharePoint Server (MOSS) 2007 and Windows SharePoint Services (WSS) version 3.0. This toolkit contains the ability to diagnose performance issues, perform bulk operations on site collections, an Stsadm operation to update alert e-mails after the URL for a Web application has been changed, and a User Profile Replication Engine tool.
The supported operating systems include Windows Server 2003, Windows Server 2008, Windows Vista and Windows XP. You must have MOSS 2007 or WSS 3.0 installed on your computer. Microsoft recommends that version 1.0 and 2.0 of the SharePoint Administration Toolkit be uninstalled first before you install version 3.0 of the SharePoint Administration Toolkit.
Here are the download links:
SharePoint Permission Reporting Tool
Included in the SharePoint Administration Toolkit from Microsoft is the Permission Reporting Tool, which provides various components to help better understand how security is being derived and applied across and within sites, lists and item. The tool includes three components – the Compare Permissions Sets function, the Check Effective Permissions function and the Broken Inheritance Reports function. Here’s a video on TechNet that will show you how to use the Permission Reporting Tool.