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.
baronnes baroness baronies barons brownness barneys barrenness barns brionies bareness brownies borons browns brines bairns bronze brownnose boranes barrens burnies bournes brinies byrnies burns brens brans brins beeriness bruins burins bronzy brains bourns brawns burans boreens burnous birianis burnoose
baronnes baroness tyrannies trannies pyrones lornness baronies barrenness brionies brownness heroines irones ironies ironness crannies crones cronies grannies greenness groynes neurones drones trones wornness
baron baronne barony barn bairn barney barny boron briony brown brownie browny