Inglish - English words spelled the way they sound.

Howjsay - The accent is British, but this is still a useful site for listening to pronunciation.

Manythings - American English pronunciation practice.

Audio English - For beginners to advanced, you'll find a lot of good opportunities to practice speaking here.

Rachel's English - This site focuses on American English pronunciation.

Spoken Skills - There are a lot of great listening exercises on this page.

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