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.
persuade pursued peracid perused preside hyperacid periostea pursed preset parsed precede pursuit pressed pierced prosody presidio presidia parricide praesidia prost prest prosciutto prosciutti priced priest prised prized prosed prosit purest purist presto
pears peers peres peris perse peruse piers pursue apers