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.
fancies fiances faiences fiancees fences finises finesses fewnesses feynesses vinaceous vainnesses venuses
fancies nancies hances incise ionises ionizes jaunces jounces finises concise quinsies lionizes launces nuances ounces penises ponces rances seances deionizes tansies tennises winceys fiances anises menaces fiancees faiences bounces bonacis quinces lances lionises fences lunacies minces nances monoecies nonces nuncios pansies pinnaces pounces sciences dances dunces tenaces winces chances