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.
in inn ion inia
ain bin main quoin lin fain fin kin vain vein din foin zein tin sain whin rin chain rain shin pein hin in zin loin quin lain gain coin kain join jin cain gin sin tain ruin wain rein win pin chin pain yin