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.
baste bast beastie based beast boast basset biased best bust bassett biassed bused besot beset boost busty beside bestow bossed boused bowsed busied bussed basidia
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
bas baas base bass bassi basso bassy bays bias boas abas abase obas