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.
wittol wittily whittle wattle whitely whitlow wetly widdle widely weedily
wittol toil kittel little tole toll ketol tool atoll tolu citole sotol stool retool dottle rattle tittle pettle whittle nettle chattel mettle tola fettle settle kettle kittle cuttle cuittle guttle vittle phytol cattle citola stole bottle rattly dottel pottle tattle nettly wattle mottle battle metol shuttle
witty wit wait watt whit white whitey whity wite twit