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.
scalls scales sculls squalls seagulls secalose scowls skells skills skoals socles skulls squeals cicalas suckles squills sickles zocalos sicklies skilless sockless squillas suckless siglos sokols sequels
calls squalls scalls galls begalls recalls quells regales quills equals aiguilles vocals gals jacals squills gulls squeals kails jackals kills quails goals scales sculls skells skoals callas squillas zocalos teocallis rocailles decals locals coquilles kales coals recoals cicalas cullis culls faucals jacales gaols cauls legals quolls skulls callus gallus locales calos coalas seagulls skills galas gales coequals koalas ticals