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