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.
precieuse precise precious precis precess piracies prises prezes pareses praises peruses parises prisses paresis presses prissies prossies peeresses prases purses parses perses prices proses prizes pierces process prosses pursues pyrosis