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.
framer farmer firmer former
reamer roamer dreamer creamer framer dormer primero rimmer lorimer grummer grimmer farmer rhymer primer premier armer roomier creamery rammier crammer harmer dreamier termer trimmer wormer charmer firmer crummier rammer brimmer germier ormer krimmer groomer rummier grimier creamier rummer former crimmer broomier rimer primmer roomer barmier crumber rimier drummer trimer warmer wormier chromier
frame farm fermi firm foram form forme formee from