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.
somoni someone soman simony simoon summon symbion zoomania semen saimin seaman seamen semina simian
somoni mon mono monie moan camion gammon lemon newmown mammon ramona simoon moon simony summon daimon mony mown pneumonia muon muni ammonia ammono amnia amnio bemoan jomon common kimono lemony gnomon mini daemon demon