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.
pree puree pure peer pyre pore prey pere pare perea pareo parae peery pareu peerie pereia per pro pry par pur poor puri pear proa para peri pour pray parr prao prow pair pier purr prau pyro hyper parry perry poori
ree bourree bree free hiree gree laree pree puree saree siree sirree soiree dree tree re