The yubutils project is a grouped project that houses three main downloads.
1. yubController - a GUI front end for yubnub that works on Windows, Linux and OS X. It may also work on other POSIX systems such as FreeBSD, OpenBSD, NetBSD, Solaris, etc..
2. yncs - a text interface for yubnub and pipe developers (included in the yublib downloads). It works with the same platforms as yubConroller.
3. yublib - the core of yubutils front ends. Python library to interface with yubnub. It is ment for developers who wish to interface with yubnub in their own applications.