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.
chasse chase chaise chaos chais chose chaws chias chess chays chouse chowse chiaus cheese choose choosey chez chis shays shaws shahs chows chews sheas cheesy choice choosy wyches choughs shaughs
passe tasse chasse masse wrasse ass tusseh quass chase tass case liaise massa bassy basso bassi base bass asea lass pease tease lase lassie sassy paseo lease lassi pause posse raise reissue cease tassie cause paise passee issue vase fosse fossae lasso lessee jesse gassy fease hawse gauss gussie phase rase chaise fesse ease mousse pase pass poussie cuisse sass dassie mass massy tawse tissue issei
chai chao chaw chay chia chiao hash cash cashaw cashew cashoo