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.
prissy priss pursy press peris prosy pricy pross paris puris pries prise praise pricey pooris paries parries peeries perries prossie pariahs peeress pars purs pros preys purse pairs pores presa peers paras peres proso pyres parse prees prese pours prays prose prize purrs prase proas praus perse parrs pares pears praos pyros piers price prows piracy porose pareus parous peruse purees pursue porous hypers pareos
prissy brassy briss harissa cressy crissa grassy morassy priss dressy drossy tressy