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.
pursy purs prosy pours purrs puris purse pursue prissy purees pars pros praus pricy pries prows pores pyres paris proso pairs pares prise pross presa piers prees paras priss parrs perse pears prose press preys prase pyros praos parse proas peers prays peres prese peris pareos porous pareus piracy hypers pooris praise pricey peruse porose parous paries pariahs parries peeress peeries perries prossie prez
pursy mures bourse currs curse course lures lauras puris auras houris hearsay nurse knaurs pours aures buhrs suers giaours auris churrs purs furzy burrs brosy sieurs ursa kurus gurus douras gorsy dures kersey durrs horsey buras muras rosy fours ours murrs knurs phoresy horsy prosy sours queuers lours jersey curs cures euros bursa hours burs guars heresy duros kauris duras gaurs suras kouros feuars tours ruers burse purse furs purrs urus yours
pur pour pure puree puri purr spur spurrey spurry