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.
reefy reef reify ref reif reive revue reeve reave review rev rif raff rave rife riff rive roof rove ruff
beefy reefy beef keef leafy reef reify defy deify
ree bree free gree pree dree tree