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.
fohns foehns fons foins fans funs fens fins fines fawns phons finos fauns finis fanes fanos faenas faunas phones phonos phoneys fannies phonies fewness hyphens funnies finesse feyness vans
johns fohns ons huns sonsy pons monos joins knowns kaons conus pions hones lions moons ions coins loins quoins eons hons conns foehns sones tones shuns downs chins whins zoons towns tonus noons roans bones dons aeons owns nonas peones goons ones hysons moans gowns bonus onus boons koans zones peons fons tons pones donsy phonos loans foins hins paeons poons loons phons scions cions cons shins monas whens onos nouns nones neons muons mons hyphens hens leones wons phones coons cones jones sons donas tauons toons yonis