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.
pursue purse purs prase prese purrs puris pursy parse pours perse prose prise purees praise peruse porose prossie pros pars prez piers peris pries price pross praos pyres praus paris preys pores prows prize priss pairs prees peers proas proso pares prays pyros peres paras prosy press pears parrs presa hypers porous parous pooris pierce paries pareus pricey pareos prissy pariahs parries peeress peeries perries
pursue reissue morose kersey nurse corse cruse carse porose perse prese horsey gyrose verse arse hoarse prose rerose rise ceruse rose druse frise terse ruse torse arise trues rues ursae gorse arose rase hearse marse grues morse coarse course jersey peruse parse prase horse gyrase phrase purse prise birse rerise erase cerise burse cirrose erose hydrase brose torose bourse truce bursae urase curse worse
pur pour pure puree puri purr spur spurrey spurry