Please visit their home page for the newest releases and documentation. Click here for Xfree 3.3 documentation, contains information on supported video cards and installation. As the linux movement gained momentum, it has come up with an excellent windows environment. Not Win95 enviornment, but a multi-tasking colorful and fun environment where users can use the power of Linux in a GUI envirnoment. As X-Windows has grown along with the Linux operating system, many improvements and adaptations have been added.
Window managers are part of the graphical interface.
There is a variety of x managers out there. The window managers that you use, should really be based on what your using it for. IceWM is extremely resource friendly and yet is still useful. E is well known for being one of the most graphical window managers out there. Work on E has been executing for some time now, and as more time passes, more managers will become more dependable.