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.
cicalas cyclase cycles cyclos scales scalls zocalos sickles sicklies secalose squillas scowls sculls skoals skills siglos socles squalls squeals squills suckles
cicalas calls zocalos scales colas recalls locals jacales faucals jackals calos cauls class claws clays dewclaws declass coalas coals euclase scalls cyclase recoals maculas locales vocals jacals callas bacalaos koalas galeas galas galahs declaws decals ticals
cicala cicale cecal cecally icicle