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.
congou congo conga cangue cooing conk gong cooeeing conic conky cuing going cueing gangue quango
congou bingo tango dengue pengo mungo bongo fungo jingo cangue congo gangue quango langue lanugo lingo lingua mango mongo mongoe nonego pingo dingo tongue
con coign coin cone coney coni conn cony coon icon cogon coigne scone