International Phonetic Alphabet— This site has excellent animation demonstrating what happens inside the mouth when various American English sounds are pronounced.
Dominant Stress— One of the greatest difficulties English langugage learners have is with putting more stress, or emphasis, on some words than on others in a sentence. Try to exercises for identifying the dominant stress in spoken English sentences.
Sheep or Ship?— Listen to and practice frequently confused or difficult-to-pronounce English sounds.
Karaoke Party— How well can you hit the desired notes when you sing along? This karaoke site has pitch indicators and gives a final score for how well the user matches the intended tune of the song. This is fun, bu it can also help you with pitch variation when you speak.
Text to Speech— Choose an avatar to speak the words you type. Choices of male/female, American, British, or Scottish English, and options for sound quality, such as speed, duration, and pitch.
See It & Say It— Video demonstration of pronunciation of frequently confused English sounds. There are also video tutorials with pronunciation tips and downloadable transcripts.