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.
presidio presidia praesidia preside presto pressed prest parsed purest prosit prized priest pursed priced prosed prised preset prosciutto prosciutti pierced pursued precede perused prissed poorest praised prosody peracid proceed pursuit parasite porosity hyperacid parricide periostea prussiate prost purist
pares peres pores prees presa prese press preys pries pyres apres