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.
periti pert yperite peridia peart parity pyrite perdie period purity pierrot prat part port priedieu pried pruta pride perdy perdu party purty pardi parrot peered perdue pretty protei prutah parodoi parried parroty proette
periti britt heriot crit roti writ verite barite brit write yperite rewrite sortie purity droit parity trait merit worrit krait charity griot riot burrito rarity verity cowrite fritt frit fruit ferrite ferity forrit pyrite cerite bruit rite diorite norite territ lariat trite grit chariot curite shortie
peri per opera apery aper puri pier perry perea pereia pere peery peerie peer pear pariah speir