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.
chaste chased chassed chest chesty cheesed choused chowsed shist shiest
baste chaste taste waste haste caste paste ghast wast past ceased pasty listee sayst costae sate east misate caseate maist cast roast roseate hessite beastie nauseate yeast geste testee teased rased resite eased toasty lased beast fast feased biased fissate testae hast chased bast coast cased phased saute mustee stey mayst hasty mast moste coesite pastie zoisite leased site vestee piste oast postie boast based vast mestee lysate fossate last least nasty vasty feast pasta toast waist tasty gast stew yeasty
chase chasse cashews chais chaise chaos chaws chays chess chiaus chias chis chose hashes ichs cashaws cashes cashoos