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.
pleat plat paleate pileate plead palet plait platy plate pallet piolet pellet pullet pleiad palate palette plot pled plateau pelt palliate pallette paled puled poled plied piled pilot plaid poult paillette palled polled polite polity pelota pealed peeled plutei pooled pilled pelite plotty pulled payload playday pollute pullout palladia plod
bleat pleat cleat lat let fellate boleti callet collate vallate blat late fillet violate millet lati bloat billet leet howlet bullet elate bluet folate bullate colead blet cullet latu chelate willet pallet toilet delete relet delate dealate slate plead sleet fleet sallet malate pullet mullet gelati pileate alate owlet float balata ballet galleta platy blate quillet gallet plate gleet piolet palet oleate collet gelato muleta gallate valet flat gloat velate violet maleate lead paleate plait palate mallet gelate gullet filet plat galeate bolete pellet relate culet rillet slat slaty solate dealt delead dilate wallet chalet cholate
plea pilaw pule palea paleae peal pele pilau pale pilea pile pilei play plew plie pole pula splay