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.
referees refers reefers refires refries reveres reoffers reveries refreeze reifiers revers reverso reverse roofers reavers reivers rievers rivieres ravers rivers rovers refroze reovirus rivieras roughers
referees faeries feres frees veeries liveries knaveries oversee pufferies reveres reveries rivieres spheres chevres chivarees shivarees
refer referee reefer refire refry revere reverie revery rifer prefer