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.
dita dit dite duit data diet doit ditty deity ditto tat did tad tit dot dad taut deet date doty duty dado dead titi dido dote daut teat dawt didy duet dato tate doat duad dada died toit daddy datto didie diode dotty tatty titty today