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