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.
base bas bass baas boas bays bise bias bowse bassy beaus basso baize bouse bassi bis bys bus bos bes bows boss busy bios bioassay beys boos bice bize bees boys buss buys baiza bazoo booze bossy bousy buoys byssi
base ease fease phase vase case lase lease pase pease rase cease tease chase as