PAM is the Pluggable Authentication Modules system for SunOS, Linux and most other flavours of Unix. It allows a great degree of control to the administrator, who can pick from piles of free modules to setup user sessions just as he sees fit in his situation.

Porting PAM to Windows is highly desirable and we have undertaken this task on behalf of the many that will benefit from it. We are planning to release the code under the same two licenses as originally used for Linux-PAM, namely BSD-style and GPL.

The problem with the GPL is that it is often hijacked by companies who do not care to read licenses. We want to avoid having to charge such companies in court (we prefer development chores over sueing activities) so what we do is have prospective customers see only the non-GNU version first.