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.
plait plat plate pleat plaid platy pelite polity palate polite pileate paleate plateau pelt plot palliate palladia plied pilot palet poult plead paillette pallid pullet pelota plutei pellet piolet pleiad ploidy plotty pallet palette payload playday pollute pullout pallette pled plod
plait lat lit collate float fellate iolite solate blat gelati late relate elate velate plaid laid halite bloat latu lite slaty reality flit daylit cholate waylaid gloat tillite duality nullity delate gallate polite platy miladi lilt slat palate laity plat jollity lati phyllite alit bleat gelate illite zeolite pleat flat tuladi polity bullate slate relit flite elite plate relaid galliot blite quality dilate alate litu violate pelite oolite mullite malate balata galiot chelate cleat gelato blate folate vallate slit dealate tallit hyalite
pail pilau pilaw pili play plea plie polio pula puli lapilli papilla papillae spail splay