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.
fordoes foredoes fords fiords fortes forties frets fards forts farads fortis frites frauds ferrets fretsaw ferrates phorates ferrites faradays ferities faradize faradise farts frats frits fritts fruits verites viroids virtues
fordoes weirdoes haeredes birdies bourrides brides garrotes merdes grades parades corrodes crudes joyrides irades weirdies foredoes reredos hordes derides hairdos hydrides hayrides teredos erodes trades burdies weirdos prides parodos bredes irides prudes rotes rides gourdes ordos grides parados credos garotes corrades perdues bardes rodes sarodes hurdies dorados hardies tardies heredes tirades redoes uredos redos redes borides charades