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.
bes beys bees beaus bas bys bos bus bis bias bize busy boys baas boos bios bays boss base bise buys bows buss boas bass bice baize bouse bassy bassi booze bowse buoys bossy bousy basso byssi boughs