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.
brans brains brawns burans boranes brens burns brins barns birianis browns brines bairns bruins bourns burins barons borons barneys barrens burnies bournes brinies burnous byrnies boreens bareness baroness brownies baronnes baronies burnoose brionies beeriness brownness brownnose bronze bronzy barrenness
brans grans furans shorans lorans trans currans pyrans burans sarans trains herns burns ranis cranes burins airns bourns sharns erns cornus frons girns gyrons runs garrons morns ruanas journos herons mirins boranes curns guaranas terrains murrains ernes reearns yarns saurians warns turns pornos ternes durns drains darns sorns serranos churns brens parians prawns purins groans varnas piranas querns karns firns harianas irons ornis borons rins neurons roans hyperons bournes puranas rains porns wrens brawns wyverns earns guaranis kernes liernes grains corns bairns cairns barrens barons kirns barns grins carns morons perrons horns sarins brains ferns furanes learns pirns marranos kerns brins girons marrons serins reruns sirens syrens diurons durians tarns terns terranes mourns urns warrens shairns birianis yearns
bran branny burnie buran barn barney barny borane born borne brain brainy brawn brawny bren brin brine briny burn byrnie