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.
piracies pierces praises prices precis prases precieuse process precise precess prossies precious prissies proses purses perses parses prises prizes prezes pareses parises peruses presses prisses prosses paresis pursues peeresses prosos
piracies curacies terraces praises mercies graces crazies fraises farcies farces braizes braises braces boraces raises races hyraces reraises traces