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.
zein zin zine seine zinnia sin sen zone zona sewn sain sinh sene seen cion zany cine sign sine zoon scena scene scion senna sinew xenia zonae