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.
platier plater plaiter platter pleater plottier palter pelter politer poulter plotter pleader polluter palliator paltry peltry polder plodder poultry pellitory
floatier platier slatier gleetier guiltier blatter alter leadier miltier vaultier latter elater pleater clatter realter salter siltier halter bloater blottier slittier zoolater faultier palter bleater flatter sleetier plater later gloater flytier violater joltier gladier floater maltier sluttier flutier falter plaiter platter plottier relater saltier slater dilater
plat palate plaid plait plate plateau platy pleat splat