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.
trod trode toroid triode turd trad trot trued tired tared treed tarot torot tyred trout droid tried trade tardy tread tardo triad toured tarred trouty tiered teredo torrid teared tirade tarried hydroid tret tart tort dreed dried torte treat trait dread torta tarty droit trite druid dared dured