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.
reavows reaves revs reviews raves revise revues reeves reives revoice refs raffs roofs reefs rives reifs roughhews roves raphes raphis reface refuse roughs ruffes rufous raffias raphias reifies roofies
avows reavows vows avos savoys