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.
data dita dato dawt date doat daut dada datto dawtie dautie dit tat tad dad dot tatouay dead teat duit doit dado duad deet dote diet tate dite doty duet duty taut daddy deity ditto ditty dotty tatty today