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.
quittors quitters quieters gutters quoters quatres cutters guitars quatorze kiters gators couters guiders cuatros cotters cottars goitres goiters gaiters cottiers coutures goitrous catteries caters coders gaters
bettors quittors tors lotters fitters sautoirs ratters attars torse sitters stours rotters viatores whitters letters ritters tatters netters ottars mutters knotters tutors shutters butters wetters titters detours tours batters betters bitters chitters meteors fetors patters hatters getters jotters cotters gators quitters potters torus vetoers setters foetors toros torsi viators jitters gutters toras torrs suitors torso hitters dotters cottars faitours cutters matters tores satoris litters rotors putters vetters petters stores natters nutters reutters motors fetters totters otters utters whetters knitters chatters shatters tetters yatters