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.
kneads neats needs nadas naiads naiades neddies nods nets netts gnats notes nides nites nodes newts nates knits nodus nidus nudes knots wynds knouts nodous nudies noddies
beads heads meads deads reads kneads leads eds ads meats codeias eats kadis goads edhs mads dads ideas fados padis jades geds qaids aedes feats sades readds aids redds pedes redos feds naiads heeds rads neats zeds sheds shades chateaus woads weeds wads wades teds tads deeds dadas seeds peats cedes saids getas lades reeds betas gateaus peds loads qadis gadis cades beds cadis bads teas beats bauds reds nadas redes lauds etas sadis fads pietas tease cads hades feuds mauds coeds naiades bawds gads quads lads fetas adds meds needs fades feeds cedis raids ados feods leuds caids heats maids roads toeas pads seats meeds zetas suedes dados gauds duads teats toads wadis weds wheats chads cheats shads yauds