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.
blessed blissed bloused blowsed blest blazed bluest belaced blowzed bulliest blast blasty ballast blastie
blessed lassoed leased blissed flossed classed coalesced coleseed glassed glossed pleased released
bless bales biles bliss blues bluesy boles ables