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.
coffees coiffes coffs coiffeuse coves cuffs coofs cafes caffs coifs cuvees gaffes coveys caves cuifs gaffs goofs guffs keefs cavies coughs keeves quaffs quiffs guffaws
coffees toffees feoffees fees toffies baffies biffies bouffes fifes jiffies coiffes piaffes pouffes ruffes taffies gaffes waffies fes