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.
genet gent genette gentoo jennet giant ginned jeaned
tenet genet net bennet duende meant bannet newt nett neat gannet bent kent queened nonet pent hyphened punnet rent cent centu sennet sente sonnet tent weened sheened yenta lent minuet linnet leant went bento bonnet lento ninety hent gent jennet keened feint kente tenty lunet shent vent peened pineta rennet rente cento scent sent senti dent menta yente
gene gen genie genii genoa genu genua gien agene