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.
brook brookie broke brock burgoo berk birk bork bark barky burka brake braky break brick burke birkie bricky brogue berake baroque barrack berg brag brig burg
rook brook crook croak trock iroko tarok drouk grok crock euroky frock burgoo broke brock rooky rock troak troke