KeyKey Typing Tutor for my experience is the best and smartest typing tutor available on the Mac today. It's a new comer on the market but, having tested many of them, I could not recommend it enough. The engine adapts immediately to my strengths and weakness and the live statistics are incredibly clear and motivate me a lot.

Are you a software engineer and unsure of your current leveling? Eng Quiz is a quick 25 minute technical quiz that gives you a coarse estimate of your level and expected compensation.