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.
blasty blast ballast blastie blest bluest ballista bulliest ballistae blazed belaced blessed blissed bloused blowsed
blasty last least lusty ballast blast falsity villosity heliast callosity clast gulosity pilosity chiliast
blase balas bals balsa belays bels blahs blaws blaze bless bliss bolas bylaws ablaze