I've taken a list of English words, and examined each of them to see what they sound like (using the PHP metaphone function). This page lists the most common metaphone codes, along with their words. You can also search for a word of your own, and see which words sound similar - and which ones rhyme, and which ones alliterate.
snell sanely snail snool sonly cineol senile cineole sunnily zonally
knell snell null anneal fennel finely funnel vineal anele kennel cuneal quinela lanely lonely panel kneel tineal channel canella noel ronnel quenelle cineol nill sanely runnel pineal hymeneal niello lineal quinella gunnel cannel knoll nelly nielli dynel tunnel chunnel
sane sene sine sinew sinewy sone syne esne usnea