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.
blest bluest blast bulliest blasty ballast blastie blessed ballista ballistae blazed belaced blissed bloused blowsed blowzed
lest molest tallest coolest dullest realest halest vilest blest shoalest foulest fullest fellest chillest illest palest realist lust lowliest volost hilliest jowliest niellist glost fliest oiliest teleost violist mealiest wiliest pollist vealiest jolliest clast list bluest holist ballast celesta paliest dialist silliest wooliest nailset cellist palliest sciolist alist least diallist ruliest lost coaliest roiliest dulcet holiest blast duelist relist whilst shaliest gluiest last sliest dualist duellist celeste delist woolliest eeliest chilliest phallist shelliest bulliest shoaliest
bless bales bals balsa bels biles blase bliss blues bluesy blueys boles ables