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.
palea paleae plea pale pilea pal paella pallia pele pail pall pole plew plie peal pawl pile pial pule paly pally pilei pollee pulley pol ply pul plow pull poly ploy pily pool pili play poll polo pula puli pill peel
galea palea ala lea ale qualia calla alee gala paleae pale nala hale haole flea gale quale ilea plea realia sale tala wale whale chaleh shale coala leal vale quelea bale olea galah mealie maile galeae male koala value goalie alae kale aloe pilea rale rouleau dale tale walla chalah challa shaley