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.
roofies roofs reifies roves rives roughies ruffes reives revoice reviews raffias rifs refs revs ruffs riffs reifs reefs roughhews raffs raves roughhouse reeves revise refuse raphes revues raphis reaves reface roughs rufous raphias reavows
roofies baffies biffies fiefs fifes fives jiffies movies reifies defies deifies taffies toffies waffies fes