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.
praises prises prases prisses parises prissies piracies prizes perses purses prices parses proses pursues presses peruses pareses precise prosses prossies peeresses precieuse precis prezes prosos paresis pierces precess process pyrosis precious
braises raises reraises fraises praises cruises cuirasses wrasses piracies gyrases greases curacies creases merises arses morrises braizes grasses prases arrases arises phrases arrises frises hybrises frasses prisses rerises derrises terrases trioses ureases charases rases krises boreases bruises brasses frisees pharisees crises crazies carses irises harasses brises prises crases rises parises hearses lorises birses marses morasses orrises parses brisses erases cerises hydrases trasses urases whereases sherrises
praise pries upraise puris proas prissy priss prise prays pairs praus prase praos peris paris paras uprise