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