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.
chaws chaos chews chais shaws chias chows chays chase chaise chowse chasse chiaus chis sheas shows chose shahs shays shews chess cheesy choose choosy chouse cheese wyches choosey choughs shaughs chez shes
chaws haws shaws has jaws whews chows chews hews tawse miaows gnaws raws daws haes hahs hawse hows sheas shows vaws hays chase chaos saws taws waws chais laws caws gawsy paws chays chias shahs maws phase shays shews yaws
chaw chai chao chay chew chewy chia chiao chow shaw chowchow