American Homophones - - List of American English words that sound the same (or very nearly the same) but are spelled differently.
AsifSound vs. Spelling - American Dictionary - - Spelling glossary indexed by its abstract grouping pronunciation (=Asifsound). AsifSound consists of 12 sound symbols. This is made from CMU Pronouncing Dictionary.
The CMU Pronouncing Dictionary - - A machine-readable pronunciation dictionary for North American English that contains over 100,000 words and their transcriptions.