FocusWriter is a free word processor or text editor.
It utilizes a hide-away interface that you access by moving your mouse to the edges of the screen, allowing the program to have a familiar look and feel to it while still getting out of the way so that you can immerse yourself in your work.
FocusWriter supports text, RTF, and many other document types. It features typewriter sounds, autosave, spell-check, and live statistics. It has timers and alarms as well as daily goals. You can also easily customize themes to your liking. And finally, FocusWriter also has a portable mode available.