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.
gaydars gadders gauderies cadres gaters gators guitars gaiters guiders catarrhs caters coders coaters codders cottars cuatros goiters goitres gutters kidders quatres
gaydars dares dears hydras hydros lidars midairs radars redears cedars cyders deodaras deodars chadars cheddars chuddars