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.
pert peart periti prat part port yperite pierrot perdu party pruta perdy purty peered perdie parity pretty period prutah purity parrot perdue parroty proette peridia prod pard pirouette prate pored proud pardy pride preed pardi pared pried purda prude
per pere perea pereia peri perry