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.
digamies degames degamis digammas digamous dicambas degums dogmas
bigamies oogamies digamies gambes degamis degames pygmies pigmies acmes games kames cameos commies cammies camise camisa cames wakames
digamma digamy degame degami dicamba