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.
voguer vaguer fogger vigour foggier vaquero vuggier vigor figure fucker vagary faggier fuggier
vaguer leaguer voguer faggier rugger piggery guar bagger saggier dagger rigour queuer chequer fogger puggier doggier loggier mugger leggier liqueur augury hogger chugger wiggery toggery dogger baggier bigger boggier gaur bugger augur naggier muggur jagger jaggier jigger jogger kegger lagger wagger buggier grue agger foggier queer gagger figure hugger egger vuggier digger sagger guru goer quaggier vaquero doggery jaggery query jaguar jiggier vigour roguery rigger nigger buggery nagger soggier logger lugger piggier fuggier tagger tugger muggier waggery wiggier ligure chigger shaggier