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.
skells skulls skills seagulls skilless skoals sokols sculls scalls suckles sickles squeals squalls sequels squills secalose sicklies sockless squillas suckless scales scowls siglos socles
quells skells gallus callas galls culls cullis callus scalls coquilles begalls recalls keels skulls squeals squills teocallis sheqels calls koels gulls sculls quolls aiguilles akelas vakeels nickels rocailles quills sequels kills seagulls skills squalls squillas deckels shekels yokels