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.
chews shews chess chows chaws chowse wyches cheese cheesy chez chis shes shows shaws chose sheas shies chase chais chaos chias shoes chays choice choose choosy chouse chaise chasse chiaus choosey choughs sheughs
hews shews chews whews hes chows chess dews wheys hehs tews meows chaws newsy sews sheas news wyches shoes mews hues pews haws haes views ghees hows hoes shaws jews shes hies shies shows yews
chew chewy chaw chow shew ache eche chowchow