1)   Active Directory Cleaner 3.2.1.0
Active Directory Cleaner is a simple tool used for maintaining your AD clean and secure. With AD Cleaner you can view the list of inactive users, disabled users, locked out users, inactive computers and disabled computers.

 2)   JiJi Active Directory Cleaner 5.0
Schedule a policy for inactive users auto deletion or notification via email. You can scan your AD for inactive users, disabled users, inactive computers and disabled computers.