Workgroup Manager 10.9 for Mac can be downloaded from our website for free. The application belongs to Developer Tools. The actual developer of this free Mac application is Apple Inc.
From the developer:
Mac OS X Server includes the Workgroup Manager , a tool for user management, which allows you to create and manage users, groups, computers and computer accounts and groups.
You may want to check out more Mac applications, such as MeD's Movie Manager, Home Loan Manager Pro or Soccer Manager 2015, which might be similar to Workgroup Manager.