Grammarly - Clear, effective, mistake-free writing everywhere you type.
Microsoft keyboard layout creator - Edit the windows keyboard layout.
iTunes - Media player, media library, Internet radio broadcaster, and iPhone device management application
xmodmap - The xmodmap program is used to edit and display the keyboard modifier map and keymap table that are...
tOndO keyboard - A fast, accurate and easy to learn alternative input method.
KbdEdit - Keyboard layout editor, mapper/remapper.