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.
tapalo tepal typal tupelo dapple deploy diploe tipple topple
tapalo pal tupelo pail sepal repeal pipal opal keypal copal appeal appall appal polo plow ploy spale pial pawl paly pall pale nopal papal pupal replow spail spall diploe peal deploy tepal typal
tapa tap tape taupe tawpie teapoy tepa atap etape