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.
assai assay ass asea asci as aas ahs ais ays aahs
assai assay tassie psoai ossia missay bassi bioassay byssi essay fossa fossae issei cassia gussie quassia lassi lassie lyssa massa ossa poussie dassie tussah