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.
dado dad dido duad dead dato dada daddy datto dot tad dud did doat doty dawt dita dote toad dodo didy data dude daut deed date doit died diode today dowdy didie duddy deedy dotty teddy ditto toady doody toddy