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.
ossia ossa os oes ohs ose oohs owse
cassia quassia ossia tassie poussie massa byssi ossa messiah assai assay bassi bioassay essay fossae issei gussie lassi lassie fossa lyssa dassie missay tussah