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.
laterite laterad laddered lettered literati littered loitered literate
laterite siderite deuterate trite moderate meteorite literate iterate feterita federate attrite nitrite deaerate terete diorite deride derate outwrite reiterate territ patriate striate deuteride
later lader latria latter liter alter elater plater slater