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.
beleaped beleapt bleeped blipped blooped
leaped beleaped shlepped lapped bleeped flapped helped clapped cleped ycleped kelped milleped millepede palped slapped dewlapped whelped yelped