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.
cleat culet collet callet cullet colead collate colt clot cult clad galeate culti gloat clued yclad coled cloot clout gleet clade gleety cowled coaled clotty cooled culled called coiled gallet gullet collied quillet cullied culotte calotte collide galleta collude galette gallate galatea claddagh clod cold glad gled glut kelt kilt
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
claw clay clew clue cola cole leakily legal legally cecal cecally