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.
leet let lit lot led lat lead lati lout late lade leud lute lied latu lota loot lode lite loti litu lewd lude leady lytta latte laity lutea lotte lotto looed litai lotah wyled
beet feet keet leet meet deet weet sheet et