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.
doit dot dit diet doty dita toit doat dite dote duit deity ditty dotty ditto dought tot tit did doughty died tote dido didy daut dato dado titi deet toot date duet duty data dawt dodo tout datto didie diode doody dowdy titty