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.
degames degamis digamies degums digammas digamous dogmas dicambas
degames games gams gambes digamies gambs acmes pygmies cameos cames gamas kames gaums agamas bigamies legumes ogams oogamies pigmies degamis wakames
degame degami degum digamma digamy