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.
perea pereia pere per peerie pare proa pier para pray pure prey peri prao peer pore pear prau pree pyre puree perry pareo pareu peery hyper pariah par pry pur pro pair parr poor pour prow puri purr pyro
perea era ere sera urea terai mere deray gerah sere pere where here cere gherao pereia quaere feria vera fere area bureau terra dere sierra serai ceria eyre rear faerie aerie eerie eyra peerie areae were chorea