xhidecursor is a small X11 utility that hides the mouse cursor while
typing.

It is useful for users who spend most of their time typing in terminal
emulators or editors and want to avoid the cursor getting in the way.

The program uses the XFixes and XInput extensions and is designed to be
simple, fast, and unobtrusive.

xhidecursor is intended to be started from .xinitrc or a window manager
startup script, for example:

  xhidecursor &