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.
feat fet fat fete fiat feta feet fate fatty fed vat fad fit vet fouette ghat fado feud phat feod feed fade foot vatu veto faddy feued footy fytte ghaut
beat eat feat heat meat neat peat seat teat wheat cheat at et