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.
daycares decares dackers decrees decries dekares decrease decuries decors daikers tackers deckers daggers digress dickers degrees duckers dockers decorous degrease daiquiris doggeries dikers takers
cares daycares scares decares cars screws scores scars puggarees cores vicars scarce scries cures jaggaries cress picaras secures sowcars sucres carrs decries chickarees fiacres squares lucres nacres caress screes cries scaurs picaros vagaries crews pugarees eagres caries beggaries acres acarus quaeres soucars carse decrees dekares shikarees