PingCastle - Because the Active Directory security lies in the process and not in expensive tools, our solution is simple: download PingCastle and apply its methodology.
ManageEngine ADManager Plus - Unified Active Directory, Exchange, and Office 365 management and reporting solution.
ADHQ - Desktop Application for Active Directory Bulk Management and Reporting
Directory Manager - Directory Managers allows an authorized user (such as someone from Human Resources) to update other user's information in the Active Directory and thus the Exchange Global Address List.
AD FastReporter - Software solution for Active Directory Reporting and Management
OldCmp - Command line Active Directory query tool.