Likewise

Likewise Software is an open source company that provides audit and authentication solutions designed to improve security, reduce operational costs and help demonstrate regulatory compliance in mixed network environments.

Likewise Open is the first open source enterprise-class solution to address the authentication needs of organizations with mixed networks. Likewise Open easily and quickly joins virtually all enterprise platforms to common directories such as Microsoft Active Directory. Likewise Open is a great starting point for companies that are grappling with home grown solutions to solve their authentication challenges.