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.
spools spoils spiels speels spalls spales spiles speils spails sepals spills splays spells sapless supples sepalous soapless soupless supplies zeppoles splice
spools pools poles polis polls polos pols polys appaloosa cupolas maypoles repolls spoils zeppoles dipoles