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.
peri per peerie pereia pear puri pier peer pere poori hyper peery perea perry pariah pry pur par pro pree pyre prow prau proa parr pray poor pare pore pure prao para pair pour purr prey pyro parae pareo pareu parry puree