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.
whiten wheaten widen witan witney wooden
whiten ten rotten teen batten quieten bitten boughten beaten potteen ratten butene piton paten sateen sitten niton steno neaten titan maiden diene fatten witan chiton sheitan litten latten ratteen retene laten eaten ketene gotten kitten hoiden heighten catena poteen wheaten patten lateen written oaten seitan neoteny stein mitten tauten lutein widen chitin shaitan shotten
white whit whitey whity wit wait what whet whid whidah wite witty twit