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.
pear par per pere pare para pair pier peer peri parr hyper pareo perry parry peery perea pareu parae pariah pereia peerie pro pry pur pyre puri pour pure prau pore pray prao prey prow poor proa pree purr pyro poori puree
bear ear shear wear tear dear sear rear pear near lear gear hear fear year ar er