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.
maple maypole
maple pole dapple supple spale popple nipple papule pele pule pile plea plew plie uppile tipple chapel dipole palea apple lapel zeppole spile ripple people maypole papal cupule couple pale hopple haply fipple topple duple wheeple diploe cheaply