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.
braky break brake barky bricky braggy berake barrack bark birk bork berk brag brook burke burka barca broke brock brick burqa birkie brookie berg brig burg
braky barky euroky break forky berake barrack brake quirky murky margay perky croak creak rerack cracky darkey corky dorky carack track freaky troak hayrack arrack rack croaky jerky rake raki freak wrack wreak raku larky narky mirky arak porky creaky sarky crake darky crack drake carrack traik phreak turkey