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.
droit droid diorite dart trot dirt hydroid drat druid dried trout dorty derat tarot trait torot trite dirty toroid hydrid territ dorado derate deride trouty hydrate hydride deaerate tart tort tret trod
droit rot norite griot roto forrit parrot garote groat grout carrot tarot periti lariat merit fritt verite ferity roti riot viroid purity choroid root charity worrit rewrite trot trait toroid rota bruit yperite writ rote rite cerite diorite cowrite garrote neuroid heriot fruit frit lirot grot verity cowrote territ krait grit curite rout crit ferrite droid parity burrito rewrote carroty aroid sciuroid write wrote parroty rarity hydroid barite pyrite torot brit trite trout britt chariot cheroot pierrot sheroot