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.
basso bass bassi bassy bas boas baas buss base bias bays boss bioassay beaus byssi bossy bazoo bes bus bis bos bys bees beys boos bows boys bozo busy buys bios bise
lasso basso ass kousso tasse mass sassy lassi wrasse lass pass quass mosso kusso masse gassy gauss cusso gesso bassy bassi bass massa massy paseo passe sass tass chasse