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.
gable gabble gabelle cable gobble cabal coble cabala kabala cobble qabala kibble cabbala kabbala qabalah quibble cabbalah kabbalah
able sable table seeable liable doable cable fable gable viable suable bobble dabble babel babul kibble bubble ably mobile bauble sabal noble abele hobble bible feeble gobble coble label blew bubale gabble double suably blue wabble bile tabla babble rabble cobble rubble viably cabal quibble roble bale nibble nubile nobble lobule dibble jubile nebule labile nubble obole foible rouble ruble pebble blae bole tubule habile wobble