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.
ribbon ribbony rabboni rabbin robbin robin
gibbon ribbon dobbin robbin ebony rabboni rabbin nubbin gobony gaboon gabion jawbone bone ebon bobbin baboon aboon boon bony ribbony debone dubbin
ribby rib rabbi rebbe rubby bribe bribee crib oribi drib tribe