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.
brownies brionies baronies browns brownness byrnies brinies burnies baroness baronnes brines bronze borons barons brawns brownnose barneys bournes boranes bareness birianis brans barns burns brens brins beeriness bronzy bruins brains burins bourns bairns burans barrenness barrens boreens burnous burnoose
brownies crannies trannies narrowness guaranies greenies grannies cronies carnies rawness ironies byrnies burnies brionies brinies baronies tyrannies
brownie brown browny baron baronne barony boron brawn brawny briony