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.
daily dilly doily dally dal dually deil dual diol diel dill dahl duly deal dial tail dale doyly tally delly dolly dully delay dooly doyley taille dahlia tallowy dol til del deli till tale tael dull tall dele doll dell teal dole duel tali tile tala toil
gaily daily ail oily kail hail maill nail hilly illy gilly jail filly gally leally rally really pily roily sally mail fail dilly dually tally wally willy chally shaley shily pally vail maile coaly chilly wail waly doily tail bialy dally vealy quail bally bailey bail wily ally shaly billy gayly lily mealy noily pail paly rail rawly riley sail silly shoaly