Open source Typing tutors for MAC OS X

TIPP10

TIPP10 is a free touch typing tutor for Windows, Mac OS and Linux. The ingenious thing about the software is its intelligence feature. Characters that are mistyped are repeated more frequently. Beginners will find their way around right away. (GPL)

Linux - Windows - MAC OS X

TuxTyping

TuxTyping is an educational typing tutor for kids starring Tux, the Linux penguin. (GPL)

Linux - FreeBSD - Windows - MAC OS X

2 applications