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.
reads readds reds rads readies roads redos redes raids reeds redds reatas redoes radios radius redias roadies rods rids roadeos rats rets rates rodes roods rotas rites rudds rotes ratos rides rottes raitas routes reduce rodeos riatas retuse reties writes rowdies rots ruts
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
read ready readd red rad radio rued oread great grad roadeo credo grade ired roadie orad brad reedy dread trade treat uredia redo reed rede raid reata radii redd create redia irade cred bready brede bread rediae bred road reared trad tread treaty uredo