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.
dal dial dual deal dahl dale dally daily dol dually del dahlia deil diol dele tale tael deli dell dill tall tali doll dole diel duel teal tala dull tail duly tally doyly dilly delly doily dooly doula dolly dulia delay dully doolee doolie doyley duelli duello taille tallow