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.
butle butyl battle beetle bottle buddle buddleia betel botel beadle boatel boodle battalia
butle tale tule tulle tole pettle retile radulae rutile mutule nodule motley stele module settle stole little dottle cuttle tautly kettle tittle tele utile tile whittle caudle battle beetle mettle fettle butyl footle outlie rattle pottle rootle mottle nettle motile stale citole bottle stile kittle style cuittle tattle guttle title vittle tootle futile wattle cattle shuttle
but bout bute buteo butt butte butty abut