Singscope - See your pitch analyzed as you sing
User Inyerface - A painful illustration of bad UX
Pitch-Chromatic Tuner - Tuner & Music Fitness Tracker
Listening Singing Teacher - Listening Singing Teacher helps you to sing in tune and in rhythm.
La-Vocal - Automate vocal exercises to practice easily & efficiently.
INDX - INDX is a focused place for self-directed learning.