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.
pilule paleal palely pallial
cellule pilule lull lulu alula alulae hallel diallel toluol toluole toluyl
pail pial pilau pilaw pile pilea pilei pili pill pillow pillowy pily poilu spile spill